| Subject | English | Spanish |
| earth.sc., el. | capacitor unit test button | pulsador de ensayo de calibrador |
| comp., MS | database unit test | prueba unitaria de base de datos (A unit test that validates whether a certain aspect of your database is working as you expect) |
| transp., avia., tech. | portable test unit | caja de control |
| transp., tech. | self-test unit | unidad de autocontrol |
| reliabil. | software unit test | prueba unitaria del software |
| tech., el. | test signal unit | unidad de señalización de prueba |
| tech. | test unit | consola de ensayo |
| transp., avia., tech. | test unit case | caja de control |
| IMF. | unit root test | prueba de raíz unitaria |
| comp., MS | unit test | prueba unitaria (A test that confirms the functionality and peformance of specific modules and behaviors of code. Often a subset of unit tests are also used as check-in test to discover bugs before a build) |