| Subject | English | Spanish |
| transp. | internal surface of unit of glazing | superficie interna del cristal |
| comp., MS | Microsoft Surface unit | unidad Microsoft Surface (The set of hardware components that, together with the Microsoft Surface software, make up the Microsoft Surface product. At a high level, a Surface unit consists of a computer module and the Surface Vision System enclosed in a frame and covered by the Surface tabletop) |
| earth.sc. | plasma surface deposition unit | unidad de deposición superficial de plasma |
| mater.sc. | surface pressure per unit area | presión por unidad de superficie |
| pack. | surface pressure per unit area | presión por unidad superficial |
| industr., construct. | surface unit | elemento bidimensional |
| comp., MS | Surface unit | unidad Surface (The set of hardware components that, together with the Microsoft Surface software, make up the Microsoft Surface product. At a high level, a Surface unit consists of a computer module and the Surface Vision System enclosed in a frame and covered by the Surface tabletop) |
| industr., construct. | surface unit | elemento plano |
| gen. | Surface-Launched Unit, Fuel Air Explosive | sistema tierra a tierra de lanzamiento de explosivos detonantes |
| gen. | Surface-Launched Unit, Fuel Air Explosive | sistema SLUFAE |