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nitrogen ['naɪtrədʒən] n
gen.	氮 (N); 氮第7号元素; 氮N
agric.	氮 (N, 7 号元素)
anim.husb.	氮一种化学符号
auto.	氮气
compr.	氮元素N
earth.sc.	氮化学元素
space	氮气
sport., med.	氮 (N)
tech.	氮
nitrogen An essential nutrient in the food supply of plants and the diets of animals. Animals obtain it in nitrogen-containing compounds, particularly amino acids. Although the atmosphere is nearly 80% gaseous nitrogen, very few organisms have the ability to use it in this form. The higher plants normally obtain it from the soil after micro-organisms have converted the nitrogen into ammonia or nitrates, which they can then absorb ['naɪtrədʒən] n
environ.	氮 (一种在食品供应的植物和动物饮食中必要的营养物质。动物从含氮的化合物中获得的，特别是氨基酸。虽然空气中差不多80%的是气态氮，但非常少的生物体有能力以这种形式使用它。在微生物体已经把氮转变成之后能被吸收的氨或者硝酸盐后，更高等的植物通常能从土壤中获得它。)
nitrogen freezant; propellant ['naɪtrədʒən] n
food.ind.	氮气冷冻剂，推进剂
English thesaurus
Nitrogen ['naɪtrədʒən] n
food.ind., abbr.	E941

Nitrogen: 1471 phrases in 59 subjects

Agriculture	246
Animal husbandry	82
Architecture	2
Automobiles	14
Aviation	36
Botany	1
Chemistry	53
Compressors	2
Consulting	2
Dermatology	3
Desert science	73
Earth sciences	29
Ecology	100
Electric machinery	5
Electronics	65
Engineering geology	1
Environment	10
Explosives and Explosive Ordnance Disposal	3
Fish farming pisciculture	2
Food industry	3
Food service and catering	11
General	31
Genetics	6
Geology	8
Geophysics	1
Horticulture	2
Hydroelectric power stations	1
Life sciences	3
Mechanics	1
Medical	3
Metallurgy	80
Microbiology	3
Mining	3
Molecular genetics	1
Name of organization	4
Nautical	5
Nuclear and fusion power	1
Nursing	4
Oil / petroleum	45
Oil processing plants	17
Otorhinolaryngology	1
Perfume	2
Pest control	4
Pharmacology	4
Plastics	3
Polymers	11
Refrigeration	11
Reproductive biology	1
Scuba diving	3
Space	73
Sports	15
Steel production	3
Submarines	2
Surgery	1
Technology	305
Textile industry	5
Thermal Energy	2
United Nations	10
Water resources	53