| Subject | English | Portuguese |
| comp., MS, Braz. | reference field | campo de referência (A field that is associated with another field so that their properties always match. If the properties in one field are changed, the properties in the other field are updated automatically) |
| antenn., opt. | reference surface tolerance field | domínio de tolerância da superfície de referência |
| radio | reference usable field strength | intensidade de campo nominal utilizável |