| Subject | English | Spanish |
| med. | abdominal X-ray taken without contrast | radiografía de abdomen |
| fishery | acoustic ray | rayo acústico |
| med. | actinic ray ophthalmia | oftalmía eléctrica |
| med. | actinic ray ophthalmia | oftalmía actínica |
| med. | actinic-ray ophthalmia | conjuntivitis actínica (conjunctivitis actinica) |
| nat.sc. | aggregate ray | radio agregado |
| meas.inst. | alpha-ray spectrometer | espectrómetro alfa |
| meas.inst. | alpha-ray vacuum gage | manometro alfa de vacío |
| meas.inst. | alpha-ray vacuum gauge | manometro alfa de vacío |
| earth.sc. | alpha rays | radiación alfa |
| earth.sc., tech. | analysis by reflection diffraction of x-rays | ensayo de difracción-reflexión de rayos X |
| earth.sc. | anode rays | rayos anódicos |
| meas.inst. | anti-Compton gamma-ray spectrometer | espectrómetro de rayos gamma anti-Compton |
| life.sc. | anti-crepuscular rays | rayos anticrepusculares |
| med. | artery X-ray | arteriografía |
| gen. | artery X-ray | radiografía de algunas arterias |
| med. | atomic ray cataract | catarata por radiactividad |
| earth.sc. | Becquerel rays | rayos de Becquerel |
| textile | beta ray | rayo beta |
| meas.inst. | beta-ray electroscope | electroscopio detector de rayos beta |
| gen. | beta ray emitter | emisor beta |
| meas.inst. | beta-ray spectrometer | espectrómetro de rayos beta |
| el. | beta rays | radiación beta |
| earth.sc. | beta rays | rayos beta |
| nat.sc., agric. | bilateral ray system | sistema en radios bilateral |
| med. | bile duct X-ray | colangiografía |
| gen. | bile duct X-ray | radiografía de contraste de los conductos biliares |
| ichtyol. | blonde ray | raya boca de rosa Raja brachyura |
| life.sc., fish.farm. | blonde ray | raya boca de rosa (Raja brachyura) |
| life.sc., fish.farm. | blonde ray | escrita (Raja brachyura) |
| earth.sc. | Blondlot rays | rayos de Blondlot |
| earth.sc. | Blondlot rays | rayos N |
| med. | bone X-ray | radiografía ósea |
| ichtyol. | Brazilian electric ray | tembladera brasileña Narcine brasiliensis |
| met. | brazing or soldering using a concentrated light ray as heat source | soldeo fuerte o blando por radiaciones luminosas |
| ichtyol. | brown ray | raya de espejos Raja miraletus |
| fish.farm. | brown ray | levirraya (Raja miraletus) |
| agric. | brown rayed knapweed | jácea (Centaurea jacea) |
| nat.res. | brown rayed knapweed | jacea (Centaurea jacea) |
| nat.res. | brown rayed knapweed | cártamo silvestre (Centaurea jacea) |
| nat.res. | brown rayed knapweed | alazor silvestre (Centaurea jacea) |
| agric. | brown rayed knapweed | aalzor silvestre (Centaurea jacea) |
| ichtyol. | bullnose eagle ray | águila naríz de vaca Myliobatis freminvillei |
| ichtyol. | bullnose ray | chucho blanco Myliobatis freminvillei |
| fish.farm. | butterfly rays | bastangas (Dasyatidae) |
| fish.farm. | butterfly rays | rayas mariposa (Gymnura spp.) |
| nat.res., fish.farm. | butterfly rays | pastinacas (Dasyatididae, Trygonidae) |
| ichtyol. | California butterfly ray | Raya mariposa californiana Gymnura marmorata |
| earth.sc. | capture gamma-ray | rayo gamma de captura |
| met. | carbide phase isolates revealed by x-rays | fases de carburo detectadas en productos de disolución mediante rayos X |
| gen. | cascade gamma rays | emisión gamma en cascada |
| avia. | cathode-ray direction finder | radiogoniómetro de rayos catódicos |
| antenn. | cathode-ray furnace | horno de rayos catódicos |
| meas.inst. | cathode-ray indicator | ojo mágico |
| meas.inst. | cathode-ray indicator | indicador catódico |
| el. | cathode-ray multiscope | multiscopio catódico |
| automat. | cathode-ray oscillograph | oscilógrafo de rayos catódicos |
| tech., el. | cathode ray oscillograph | oscilador catódico |
| tech., el. | cathode ray oscillograph | oscilógrafo de rayos catódicos |
| tech., el. | cathode ray oscillograph | oscilógrafo catódico |
| tech., el. | cathode ray oscillograph | osciloscopio de rayos catódicos |
| snd.rec. | cathode-ray oscillograph | oscilógrafo catódico |
| tech., el. | cathode-ray oscilloscope | oscilógrafo de rayos catódicos |
| tech., el. | cathode-ray oscilloscope | oscilógrafo catódico |
| tech., el. | cathode-ray oscilloscope | oscilador catódico |
| tech., el. | cathode-ray oscilloscope | osciloscopio de rayos catódicos |
| el. | cathode-ray oscilloscope | osciloscopio catódico |
| el. | cathode ray screen | pantalla TRC |
| automat. | cathode-ray tube control characteristic | característica de regulación de un tubo catódico |
| commun., el. | cathode-ray tube display | imagen de un tubo de rayos catódicos |
| commun., el. | cathode-ray tube display | imagen de un osciloscopio |
| antenn. | cathode-ray tube harness | arnés de tubo de rayos catódicos |
| radio | cathode ray tube television projector | proyector de televisión de tubo catódico |
| antenn. | cathode-ray tube scale | escala graduada de tubo de rayos catódicos |
| patents. | cathode-ray tubes | tubos de rayos catódicos |
| tech. | cathode ray tuning indicator | ojo electrónico |
| tech. | cathode ray tuning indicator | ojo mágico |
| tech. | cathode ray tuning indicator | indicador de sintonía por rayos catódicos |
| tech. | cathode ray tuning tube | tubo sintonizador de rayos catódicos |
| el. | cathode-ray voltmeter | voltímetro de rayos catódicos |
| automat. | cathode-ray voltmeter | voltímetro de tubo a rayos catódicos |
| earth.sc. | central ray | radio central |
| earth.sc., tech. | central ray | rayo central |
| earth.sc. | characteristic X-rays | rayos X característicos |
| med. | chest X-ray | radiografía pulmonar |
| med. | chest X-ray | radiografía de tórax |
| med. | chest x-ray with four views | radiografía del corazón con cuatro incidencias |
| agric. | Chrysanthemum blight, Chrysanthemum ray blight, Chrysanthemum stem canker | ascoquita del crisantemo (Ascochyta chrysanthemi, Didymella chrysanthemi, Didymella ligulicola, Mycosphaerella ligulicola, Phoma chrysanthemi, Sphaerella chrysanthemi) |
| nat.sc. | colour cathode-ray tube | tubo catódico en color |
| ichtyol. | common eagle ray | aguila marina Myliobatis aquila |
| med. | condenser-type X-ray generator | condensador de Abbé |
| radiol. | contact X-ray therapy | radioterapia de contacto por rayos X |
| health. | continuous X-ray spectrum | espectro continuo |
| el. | corpuscular rays | rayos corpusculares |
| nat.sc. | cosmic ray | radiación cósmica |
| nat.sc. | cosmic ray | rayo cósmico |
| earth.sc. | cosmic ray burst | chaparrón en cascada |
| aerohydr. | cosmic-ray shield | escudo protector contra rayos cósmicos |
| meas.inst. | cosmic-ray telescope | conjunto contador de radiación cósmica |
| earth.sc., life.sc. | course of rays | trayectoria del rayo |
| ichtyol. | cownose ray | gavilán mancha Rhinoptera bonasus |
| ichtyol. | cownose ray | mancha Rhinoptera bonasus |
| nucl.phys. | crossover gamma ray | radiación gamma de ligadura |
| life.sc., fish.farm. | cuckoo ray | raya de San Pedro (Leucoraja naevus, Raja naevus) |
| life.sc., fish.farm. | cuckoo ray | raya santiaguesa (Leucoraja naevus, Raja naevus) |
| life.sc., fish.farm. | cuckoo ray | raya santiguesa (Leucoraja naevus, Raja naevus) |
| ichtyol. | cuckoo ray | raya santiguesa Raja naevus |
| fish.farm. | dark electric ray | tembladera (Torpedo nobiliana) |
| fish.farm. | dark electric ray | torpedo (Torpedo nobiliana) |
| fish.farm. | dark electric ray | tremielga negra (Torpedo nobiliana) |
| antenn. | death ray | rayo mortal |
| earth.sc. | Debye-Scherrer X-ray diffraction method | método de Debye-Scherrer |
| med. | deep X-ray therapy | radioterapia profunda |
| antenn. | deflection sensitivity of a magnetic-deflection cathode-ray tube | sensibilidad de desviación magnética de un tubo catódico |
| antenn. | deflection sensitivity of an electrostatic-deflection cathode-ray tube | sensibilidad de desviación electrostática de un tubo catódico |
| meas.inst. | delta-ray counting | recuento de los rayos delta |
| meas.inst. | delta-ray spectrometer | espectrómetro de rayos delta |
| earth.sc. | delta rays | rayos delta |
| med. | dental X-ray equipment | equipo radiológico dental |
| ichtyol. | devil ray | manta diablo Mobula hypostoma |
| ichtyol. | devil ray | manta negra Mobula hypostoma |
| fish.farm. | devil rays | mantas (Mobulidae) |
| med. | diagnostic X-ray equipment | equipo de rayos X de diagnóstico |
| med. | diagnostic X-ray installation | diagnóstico radiológico |
| radio | direct ray path | rayo directo |
| health. | duration of X-ray tube exposure series | duración de la serie de exposición de un tubo de rayos X |
| fish.farm. | eagle ray | chucho (Aetobatus narinari, Myliobatidae, Myliobatis acquila, Myliobatis freminvillei, Myliobatis goodei, Myliobatis tenuicandatus, Pteromylaeus bovinus) |
| fish.farm. | eagle rays | águilas de mar (Myliobatidae) |
| ichtyol. | electric ray | tremolina negra Torpedo nobiliana |
| fish.farm. | electric ray | tremielga (Narcine brasiliensis, Torpedinidae, Torpedo californica, Torpedo marmorata, Torpedo nobiliana, Torpedo torpedo, torpedo ocellata, torpedo narke) |
| tech. | electron ray tube | ojo mágico |
| tech. | electron ray tube | lámpara electrónica |
| antenn. | electronic ray indicator | indicador visual de sintonía |
| earth.sc., life.sc. | emergent ray | rayo emergente |
| med. | endobuccal X-ray | radiografía endobucal |
| industr., construct., chem. | energy dispersive analysis by X-rays | análisis por dispersión de energía de rayos X |
| chem. | energy dispersive spectroscopy by X-rays | espectroscopia por dispersión de energía de rayos X |
| nat.sc. | energy dispersive x-ray fluorescence spectrometer | espectrómetro de fluorescencia de rayos X de energía dispersiva |
| tech. | energy-dispersive X-ray absorption spectrometry | absorptiometria de rayos X con dispersión de energía |
| med. | examination chair for X-ray work | sillón para examen radiológico |
| med. | examination table for X-ray work | mesa para examen radiológico |
| gen. | extra-intensifying X-ray screen | pantalla de rayos X de gran intensidad |
| earth.sc. | extraordinary ray | rayo extraordinario |
| meteorol. | EXtreme ultra-violet and X–ray Irradiance Sensors | sensores de irradiancia en el ultravioleta extremo y rayos X |
| fish.farm. | eyed electric ray | tremielga (Torpedo torpedo) |
| tech. | filmless X-ray testing | ensayo por rayos X sin película |
| gen. | filters for ultra-violet rays, for photography | filtros para rayos ultravioletas para fotografía |
| gen. | filters for ultra-violet rays, for photography | filtros para rayos ultravioletas para la fotografía |
| gen. | filters for ultra-violet rays, for photography | filtros para rayos ultravioleta para la fotografía |
| ichtyol. | finspot ray | raya espinosa Raja cervigoni |
| nat.sc., agric. | five-rayed threadfin | barbudo rayado (Polynemus quadrifilis) |
| nat.sc., agric. | five-rayed threadfin | barbudo gigante africano (Polynemus quadrifilis) |
| earth.sc., el. | flash discharge type X-ray system | sistema de rayos X de descarga por destello |
| antenn. | flash X-ray tube | tubo de rayos X para fotografía con luz de destello |
| environ. | fluid ionization chambers for measuring exposure to soft X-rays | cámara de ionización fluida para medir la exposición a rayos X blandos |
| med. | focal ray-method | método de rayo focal |
| chem. | fraction of gamma rays | fracción de rayos gamma |
| med. | frontal orbital x ray | radiografía exploratoria de la órbita |
| life.sc. | full-mouth x-ray | serie radiográfica periodontal |
| nat.sc., agric. | fusiform ray | radio fusiforme |
| textile | gamma ray | rayo gama |
| nat.sc. | gamma-ray collimator | colimador de rayos gamma |
| meas.inst. | gamma-ray detectors | detectores de radiación gamma |
| life.sc. | gamma-ray log | diagrafía gamma-ray |
| meas.inst. | gamma-ray spectrometer | espectrómetro por radiación gamma |
| med. | general x-ray | radiografía panorámica |
| chem. | glass x-ray shield | vidrio contra los rayos Roentgen |
| med. | Glocker X-ray analyzer | aparato de análisis de rayos X de Glocker |
| gen. | gloves for protection against x-rays for industrial purposes | guantes de protección contra los rayos X para uso industrial |
| life.sc. | grazing ray | visual rasante |
| nat.sc. | green ray | rayo verde |
| med. | grenz-ray therapy | terapia por rayos Grenz |
| med. | grenz-ray therapy | buckyterapia |
| IT | ground-reflected ray | rayo reflejado en el suelo |
| IT | ground-reflected ray | onda reflejada en el suelo |
| commun., IT | guided ray | rayo ahusado |
| gen. | hand held portable gamma ray instrument | aparato portátil para medir los rayos gamma |
| antenn. | hard ray | rayo duro |
| med. | Harris and Ray test | prueba de Harris y Ray |
| med. | heat-ray cataract | catarata calórica (cataracta calorica) |
| nat.sc. | heterocellular ray | radio heterogéneo |
| nat.sc. | heterogeneous ray | radio heterogéneo |
| nat.sc. | heterogeneous ray tissue | tejido heterogéneo de radios |
| energ.ind., el. | high resolution gamma ray spectrometry | espectrometría gamma de alta resolución |
| radio | high-angle ray | trayectoria alta |
| nat.sc. | homocellular ray | radio homogéneo |
| nat.sc. | homogeneous ray | radio homogéneo |
| nat.sc. | homogeneous ray tissue | tejido homogéneo de radios |
| radio | indirect ray path | trayectoria indirecta de la energía, del rayo |
| cultur., nat.sc. | infra-red rays | rayos infrarrojos |
| health. | interval between X-ray tube exposures | intervalo entre exposiciones de un tubo de rayos X |
| meas.inst. | intrinsic efficiency of a gamma-ray detector | sensibilidad intrínseca de contador |
| earth.sc., life.sc. | invisible rays | radiación invisible |
| agric., chem. | irradiation with gamma rays | tratamiento con radiación gamma |
| UN, geol. | iterative ray tracing simulation | simulación iterativa del trazado de semirrectas |
| ichtyol. | Krefft's ray | Raya de Krefft Malacoraja kreffti |
| antenn., opt. | leaky ray | rayo túnel |
| antenn., opt. | leaky ray | rayo disperso |
| nat.sc., agric. | lenticular ray | radio fusiforme |
| ichtyol. | lesser devil ray | manta del Golfo Mobula hypostoma |
| ichtyol. | Lesser Guinean devil ray | Diablito de Guinea Mobula rochebrunei |
| agric. | light rays | radiaciones luminosas |
| industr., construct., chem. | low angle X-ray diffraction analysis | análisis por difracción de rayos X de pequeño ángulo |
| radio | low-angle ray | trayectoria baja |
| health. | low-rating X-ray apparatus | aparato radiológico pequeño |
| tech. | low-temperature monocrystal X-ray diffraction equipment | equipo de difracción de rayos X a baja temperatura con monocristal |
| ichtyol. | lusitanian cownose ray | gavilán lusitánico Rhinoptera marginata |
| ichtyol. | Madeiran ray | Raya de Madeira Raja maderensis |
| fish.farm. | manta ray | manta (Manta birostris, Manta hamiltoni) |
| life.sc., fish.farm. | marbled electric ray | torpedo (Torpedo marmorata) |
| ichtyol. | marbled electric ray | tremolina mármol Torpedo marmorata |
| ichtyol. | marbled electric ray | tremielga Torpedo marmorata |
| life.sc., fish.farm. | marbled electric ray | temblón (Torpedo marmorata) |
| life.sc., fish.farm. | marbled electric ray | tremielga (Torpedo marmorata) |
| life.sc., fish.farm. | marbled electric ray | tremolina mármol (Torpedo marmorata) |
| life.sc., fish.farm. | marbled electric ray | tembladera (Torpedo marmorata) |
| earth.sc. | marginal rays | rayos marginales |
| earth.sc. | maximum rated X-ray tube load | potencia máxima asignada de un tubo de rayos X |
| radiol. | maximum rated X-ray tube voltage | alta tensión máxima asignada de un tubo de rayos X |
| health., lab.law. | medical X-ray technician | asistente técnico médico en radiología |
| ichtyol. | Mediterranean starry ray | Raya estrellada Raja asterias |
| nat.sc. | medullar ray | radio medular |
| agric. | medullary ray | radio medular |
| antenn., opt. | meridional ray | rayo meridional |
| el. | multipath rays | ondas que siguen trayectos múltiples |
| nat.sc. | multiseriate ray | radio multiseriado |
| earth.sc. | n-rays | rayos de Blondlot |
| med. | newborn chest X-ray | radiografía de tórax en recién nacido |
| gen. | non destructive gamma-ray scanning | barrido no destructivo por rayos gamma |
| med. | opacifying preparation for X-ray examinations | preparación opacificante para exámenes radiográficos |
| nat.sc., agric. | outer ray floret | florecilla radial externa |
| met. | paint which absorbs harmful rays from an arc and prevents their reflection | pintura protectora de radiaciones del arco |
| fish.farm. | painted ray | raya (Raja microocellata) |
| med. | panoramic dental X-ray system | panorámica dental |
| rem.sens. | perspective ray | rayo perspectivo |
| agric. | phloem ray | rayo phloematico |
| nat.res. | phloem ray | radio del floema |
| agric. | phloem ray | rayo medular |
| nat.sc. | pith ray | radio medular |
| nat.sc., agric. | pith ray fleck | mancha medular |
| tech. | planar X-ray analysis | análisis planar por rayos X |
| ichtyol. | prickly brown ray | raya piel de lija Raja teevani |
| nat.sc. | primary ray | radio de estructura primaria |
| nat.sc. | primary ray | radio de estructura molecular |
| earth.sc., life.sc. | principal ray | rayo principal |
| nat.sc. | procumbent ray cell | células radiomedulares procumbentes |
| forestr. | procumbent ray cell | célula radial horizontal |
| med. | proper radiation of X-ray tube | radiación propia del tubo de rayos X |
| gen. | protection devices against roentgen rays not for medical purposes | dispositivos de protección contra los rayos X que no sean para uso médico |
| gen. | protection devices against roentgen rays not for medical purposes | dispositivos de protección contra los rayos Roentgen que no sean para uso médico |
| gen. | protection devices against x-rays roentgen rays not for medical purposes | dispositivos de protección contra los rayos X que no sean para uso médico |
| gen. | protection devices against x-rays not for medical purposes | dispositivos de protección contra los rayos X que no sean para uso médico |
| tech. | quantity of X or gamma rays radiation ç | cantidad de radiación de rayos X o gamma |
| el. | radio horizon rays | rayos que pasan por el horizonte radioeléctrico |
| life.sc. | Raja ray | raya (Raja spp.) |
| life.sc., fish.farm. | Raja rays | rayas raja nep (Raja spp.) |
| life.sc., fish.farm. | Raja rays | - (Raja spp.) |
| nat.sc. | ray cambial initial | inicial del radio |
| nat.sc. | ray crossing | campo de cruce |
| nat.res. | ray-finned fishes | peces oseos |
| nat.sc., agric. | ray floret | florecilla radial (flos ligulatus) |
| nat.res. | ray-fungus | estreptomices |
| nat.res. | ray-fungus | actinomices |
| nat.sc. | ray initial | inicial del radio |
| el. | 2-ray interference model | modelo de interferencia de dos rayos |
| agric. | ray of light | haz luminoso |
| antenn., opt. | ray optics | óptica geométrica |
| antenn., opt. | ray optics | óptica de rayos |
| life.sc. | ray parenchyma | parénquima radial |
| life.sc. | ray parenchyma | parénquima de los radios |
| earth.sc., life.sc. | ray path | trayectoria del rayo |
| radio | ray path | trayectoria de propagación de la energía |
| radio | ray path transmission loss | pérdidas de transmissión por trayectoria |
| antenn. | ray proofing | protección contra radiaciones |
| fish.farm. | Ray's bream | palometa negra (Brama brama, Brama raii, Brama raji) |
| fish.farm. | ray's bream | japuta (Brama brama, brama rayi) |
| fish.farm. | ray's bream | castañeta (Brama brama, brama rayi) |
| fish.farm. | Ray's bream | palometa (Brama spp.) |
| fish.farm. | Ray's bream | zapatero (Brama brama (Bonnaterre)) |
| fish.farm. | ray's bream | palometa negra (Brama brama, brama rayi) |
| fish.farm. | Ray's bream | parpada (Brama brama, Brama raii, Brama raji) |
| fish.farm. | Ray's bream | japuta (Brama brama, Brama raii, Brama raji) |
| fish.farm. | Ray's bream | castañeta (Brama brama, Brama raii, Brama raji) |
| fish.farm. | Ray's bream | castaña (Brama brama, Brama raii, Brama raji) |
| med. | Ray's mania | locura moral |
| med. | Ray's mania | moramencia |
| med. | Ray's mania | manía de Ray |
| agric., industr., construct. | ray shake | fenda radial |
| med. | ray source | aparato de radiación |
| nat.sc. | ray spider | araña radiadora (Theridiosoma) |
| nat.sc. | ray tracheid | traqueida radial |
| nat.sc. | ray-vessel | radiovascular |
| nat.sc. | ray-vessel pitting | punteadura radiovascular |
| ichtyol. | rayed keyhole limpet | lapa radiante Fissurella nimbosa, F. balanoides |
| life.sc., environ. | rayed tortoise | tortuga rayada (Astrochelys radiata, Geochelone radiata, Testudo radiata) |
| el. | rays reflected from layers | rayos reflejados en capas |
| antenn., opt. | refracted ray in an optical fibre | rayo refrectado en una fibra óptica |
| antenn., opt. | refracted ray method | método de campo cercano refractado |
| med. | roentgen ray dermatitis | radiodermitis |
| med. | roentgen ray dermatitis | actinodermatitis |
| med. | roentgen ray dermatitis | actinodermatosis |
| med. | roentgen ray dermatitis | radiodermatitis |
| med. | roentgen ray dermatitis | dermatitis radiográfica |
| health., el. | roentgen rays | rayos X |
| phys.sc. | roentgen rays | radiación X |
| life.sc., fish.farm. | round ray | raya redonda (Rajella fyllae, Raja fyllae) |
| ichtyol. | round ray | raya redonda Raja fyllae |
| phys.sc. | röntgen rays | radiación X |
| ichtyol. | sandy ray | raya falsa-vela Raja circularis |
| ichtyol. | sandy ray | raya de arena Raja circularis |
| life.sc., fish.farm. | sandy ray | raya falsa vela (Leucoraja circularis, Raja circularis) |
| ichtyol. | sandy ray | raya falsa vela Raja circularis |
| nat.sc. | secondary ray | radio de estructura secundaria |
| nat.sc. | secondary ray | radio de estructura leñosa |
| meteorol. | seismic ray | rayo sísmico |
| life.sc., fish.farm. | shagreen ray | raya cardadora (Leucoraja fullonica, Raja chagrinea, Raja fullonica) |
| ichtyol. | shagreen ray | raya cardadora Raja fullonica |
| nat.sc. | short-lived alpha ray | nucleido de corta vida emisor de radiación alfa |
| health. | single X-ray tube exposure | exposición aislada de un tubo de rayos X |
| fish.farm. | skate and ray | raya |
| life.sc., fish.farm. | skates and rays | ráyidos nep (Rajidae) |
| antenn., opt. | skew ray | rayo no meridional |
| life.sc., fish.farm. | small-eyed ray | raya de ojos (Raja microocellata) |
| life.sc., fish.farm. | small-eyed ray | raya cimbreira (Raja microocellata) |
| life.sc., fish.farm. | small-eyed ray | raya colorada (Raja microocellata) |
| ichtyol. | small-eyed ray | raya colorada Raja microocellata |
| ichtyol. | smooth butterfly ray | guayanesa Gymnura micrura |
| health., el. | soft rays | rayos blandos |
| fishery | sound ray | onda acústica |
| fishery | sound ray | haz acústico |
| fishery | sound ray path analyser | analizador de trayectorias acústicas |
| fishery | sound ray tracer | trazador de ondas acústicas |
| ichtyol. | southern eagle ray | chucho amarillo Myliobatis goodei |
| earth.sc., tech. | specific gamma-ray constant | constante específica de radiación gamma |
| earth.sc., tech. | specific gamma ray emission | constante específica de radiación gamma |
| earth.sc., tech. | specific gamma ray output | constante específica de radiación gamma |
| ichtyol. | speckled ray | raya manchada Raja polystigma |
| ichtyol. | speckled ray | raya moteada Raja polystigma |
| textile | spectral ray | raya espectral |
| ichtyol. | spiny butterfly ray | raya mariposa Gymnura altavela |
| ichtyol. | spiny butterfly ray | guayanesa espinosa Gymnura altavela |
| el. | split-beam cathode-ray tube | tubo de rayos catódicos de doble haz |
| ichtyol. | spotted eagle ray | chucho pintado Aetobatis narinari |
| life.sc., fish.farm. | spotted ray | raya fina (Raja montagui) |
| life.sc., fish.farm. | spotted ray | raya pintada (Raja montagui) |
| ichtyol. | spotted ray | raya pintada Raja montagui |
| transp. | spread of rays | irradiación |
| ichtyol. | starry ray | raya estrellada Raja asterias |
| life.sc., fish.farm. | starry ray | raya radiada (Amblyraja radiata, Raja radiata) |
| life.sc., fish.farm. | starry ray | raya radiante (Amblyraja radiata, Raja radiata) |
| life.sc., fish.farm. | starry ray | raya estrellada (Amblyraja radiata, Raja radiata) |
| ichtyol. | starry ray | raya radiante Raja radiata |
| nat.sc., agric. | sting ray | pastinaca (Dasyatis pastinaca(Linnaeus,1758)) |
| med. | substance opaque to X-rays | sustancia opaca a los rayos X |
| el. | substitution method using a cathode-ray oscilloscope | método de substitución con un osciloscopio de rayos catódicos |
| gen. | successive gamma rays | emisión gamma en cascada |
| med. | sun-ray treatment | fototerapia |
| environ. | the X-ray beam is collimated by a diaphragm | el haz de rayos X se colima mediante un diafragma |
| life.sc., fish.farm. | thornback ray | raya de clavos (Raja clavata) |
| life.sc., fish.farm. | thornback ray | raya común (Raja clavata) |
| ichtyol. | thornback ray | raya de clavos Raja clavata |
| med. | three-phase X-ray unit | aparato de rayos X trifásico |
| fish.farm. | torpedo rays | torpedos (Torpedo spp.) |
| fish.farm. | torpedo rays | tremielgas (Torpedo spp.) |
| fish.farm. | torpedo rays | tembladeras (Torpedo spp.) |
| fish.farm. | torpedo rays | tremolinas (Torpedinidae) |
| commun., IT | trapped ray | rayo guiado |
| commun., IT | trapped ray | rayo ahusado |
| med. | treatment by X-rays | tratamiento por rayos X |
| antenn., opt. | tunnelling ray | rayo túnel |
| antenn., opt. | tunnelling ray | rayo disperso |
| antenn. | twin cathode-ray beam | haz gemelo de rayos catódicos |
| earth.sc. | ultra violet ray range | dominio del ultravioleta |
| gen. | ultra-violet ray lamps not for medical purposes | lámparas de rayos ultravioletas que no sean para uso médico |
| gen. | ultra-violet ray lamps for medical purposes | lámparas de rayos ultravioletas para uso médico |
| med. | ultraviolet ray ophthalmia | oftalmía actínica |
| med. | ultraviolet ray ophthalmia | oftalmía eléctrica |
| cultur. | ultra-violet rays | rayos ultravioleta |
| life.sc., fish.farm. | undulate ray | raya mosaico (Raja undulata) |
| life.sc., fish.farm. | undulate ray | raya mosaica (Raja undulata) |
| ichtyol. | undulate ray | raya mosaica Raja undulata |
| nat.sc. | uniseriate ray | radio uniseriado |
| nat.sc. | upright ray cell | célula radial erecta |
| med. | urinary tract X-ray | urografía |
| gen. | urinary tract X-ray | radiografía del aparato urinario |
| health. | UV rays | rayos ultravioleta |
| med. | vein X-ray | flebografía |
| gen. | vein X-ray | radiografía de una o más venas |
| life.sc., el. | wave rays | ortogonales del frente de ola |
| fish.farm. | whip ray | pastinaca (Dasyatis akajei) |
| automat. | Williams cathode-ray tube | tubo de Williams |
| nat.sc. | wood ray | radio leñoso |
| transp. | woody ray | madera |
| gen. | x-ray | radiografíar |
| med. | X-ray | radiografía |
| gen. | x-ray | radiografía |
| nat.sc. | X-ray absorption | absorción de rayos X |
| textile | X ray analysis | análisis con rayos X |
| chem. | X-ray analysis | análisis de rayos-X roentgenográfico |
| med. | X-ray apparatus | generador de rayos X |
| med. | X-ray apparatus | aparato de rayos X |
| life.sc., el. | X-ray astronomy | astronomía de rayos X |
| earth.sc. | X-ray attenuation | atenuación de rayos X |
| antenn. | X-ray coverage | campo de radiaciones |
| antenn. | X-ray coverage | área de radiación |
| nat.sc. | x-ray densitometry | densitometría por rayos x |
| gen. | x-ray densitometry | radiodensitometrìa |
| nat.sc. | x-ray densitometry | radiodensitometría |
| nat.sc. | x-ray densitometry | densitometría |
| med. | X-ray department | departamento de rayos X |
| med. | X-ray dermatitis | radiodermatitis (dermatitis actinica) |
| med. | X-ray dermatitis | actinodermatosis |
| med. | X-ray dermatitis | actinodermatitis |
| med. | X-ray dermatitis | radiodermitis |
| med. | X-ray dermatitis | dermatitis radiográfica |
| textile | X ray diffraction | difraccion de los rayos X |
| met., el. | x-ray diffraction pattern of a muck-like deposit | patrón de difracción de rayos X de un depósito fangoso |
| tech. | X-ray diffractometer | difractómetro rayos X |
| meas.inst. | X-ray diffractometer | difractómetro de rayos X |
| tech. | X-ray excitation fluorimeter | fluorímetro de excitación X |
| tech. | X-ray excitation fluorimeter | medidor del contenido de un elemento por fluorescencia X |
| earth.sc. | X-ray field non-uniformity | falta de uniformidad en el campo de rayos X |
| med. | X-ray film viewer | negatoscopio |
| gen. | x-ray films, exposed | películas para Rayos-X impresionadas |
| gen. | x-ray films, exposed | películas Roentgen impresionadas |
| med. | X-ray findings | hallazgos radiológicos |
| nat.sc. | X-ray fluorescence | fluorescencia X |
| gen. | X-ray fluorescence | fluorescencia de rayos X |
| chem. | X-ray fluorescence analysis | análisis por espectrometría de fluorescencia de rayos X |
| tech. | X-ray fluorescence content meter | fluorímetro de excitación X |
| tech. | X-ray fluorescence content meter | medidor del contenido de un elemento por fluorescencia X |
| tech. | X-ray fluorescence thickness meter | medidor de espesor por fluorescencia X |
| meas.inst. | X-ray fluorescence thickness meter | calibrador por fluorescencia X |
| meas.inst. | X-ray fluorescent spectrometry | espectrometría por fluorescencia X |
| med. | X-ray generator | aparato de rayos X |
| tech. | X-ray goniometer | goniómetro de rayos X |
| gen. | X-ray laser | láser de rayos X |
| tech. | X-ray lithography | litografia de rayos X |
| UN, tech. | X-ray machine | aparato de radiografía |
| meas.inst. | X-ray meter | aparato de medida de rayos X |
| tech. | X-ray, micro-analysis system | sistema de microanálisis rayos X |
| meas.inst. | X-ray microscope | microscopio de rayos X |
| textile | X ray microscopy | microscopia con rayos X |
| health. | x-ray movies | cinematografía de rayos X |
| gen. | X-ray of a bone | radiografía de un hueso |
| med. | x-ray of the sella turcica | radiografía de la silla turca |
| antenn. | X-ray output | rendimiento de rayos X |
| antenn. | X-ray output at full ratings | dosificación máxima |
| earth.sc. | X-ray pattern | imagen radiológica latente |
| med. | x-ray pattern | patrón radiológico |
| med. | x-ray photographs for medical purposes | radiografías para uso médico |
| nat.sc. | x-ray photographs, other than for medical purposes | radiografías que no sean para uso médico |
| med. | x-ray photography | röntgenografía |
| med. | x-ray photography | roentgenografía |
| med. | X-ray picture | radiografía |
| nat.sc. | x-ray powder diffractometer | difractómetro de polvo para rayos |
| med. | X-ray-related | radiológico |
| nat.sc. | x-ray scattering | difracción de rayos X |
| earth.sc. | X-ray screen | pantalla de radioscopia |
| earth.sc. | X-ray screen | pantalla radiológica |
| med. | X-ray screen | pantalla para instalación radiológica |
| med. | X-ray sickness | mal de los rayos |
| med. | X-ray sickness | radionosis |
| med. | X-ray sickness | röntgenintoxicación |
| health. | X-ray source assembly | conjunto de fuente de rayos X |
| med. | X-ray source assembly | equipo generador de rayos X |
| meas.inst. | X-ray spectrogram | espectrograma de rayos X |
| meas.inst. | X-ray spectrograph | espectrógrafo de rayos X |
| automat. | X-ray spectrograph | espectrógrafo por rayos X |
| earth.sc. | X-ray-spectrometer | espectrómetro rayos X |
| meas.inst. | X-ray spectrometer | espectrómetro de rayos X |
| textile | X ray spectroscopy | espectroscopia con rayos X |
| chem. | X-ray spectroscopy | espectroscopia de rayos |
| chem. | X-ray spectrum | espectro de rayos |
| med. | X-ray table | mesa para examen radiológico |
| meas.inst. | X-ray telescope | anteojo de rayos X |
| med. | X-ray therapy | terapia por rayos X |
| med. | X-ray therapy | röntgenoterapia |
| radiol. | X-ray therapy | roentgenoterapia |
| meas.inst. | X-ray thickness gage | calibrador de rayos X |
| meas.inst. | X-ray thickness gauge | calibrador de rayos X |
| med. | X-ray tube | tubo al vacío para la producción de rayo X |
| med. | X-ray tube assembly for medical diagnosis | equipo generador de rayos X utilizado para diagnóstico médico |
| earth.sc., tech. | X-ray tube current | mA |
| health. | X-ray tube exposure | exposición de un tubo de rayos X |
| radiol. | X-ray tube exposure cycle time | período de exposición |
| radiol. | X-ray tube exposure cycle time | tiempo de ciclo de exposición |
| health. | X-ray tube exposure cycle time | tiempo del ciclo de exposición de un tubo de rayos X |
| radiol. | X-ray tube exposure frequency | cadencia de exposición |
| health. | X-ray tube exposure frequency | frecuencia de exposición de un tubo de rayos X |
| health. | X-ray tube exposure series | serie de exposición de un tubo de rayos X |
| UN, tech. | X-ray view box | negatoscopio |
| med. | X-ray viewing screen | negatoscopio |
| health. | x-rays | rayos X |
| phys.sc. | X-rays | radiación X |
| health. | x-rays | placa |
| health. | x-rays | radiografía |
| gen. | X-rays | rayos X |
| gen. | x-rays producing apparatus and installations not for medical purposes | aparatos e instalaciones para la producción de rayos X que no sean para uso médico |
| nat.sc. | xylem ray | radio leñoso |