| Subject | English | Portuguese |
| commun. | common diagram system | sistema de seleção de canal |
| auto.ctrl. | common diagram telecontrol system | sistema de telecontrolo de diagrama comum |
| auto.ctrl. | common diagram telecontrol system | sistema de telecontrolo por selecção de canal |
| comp., MS, Braz. | system diagram | diagrama do sistema (The diagram used to design an application system composed from applications or other systems. The system diagram (.sd) file contains information based on the System Definition Model (SDM)) |
| el.gen. | system diagram | esquema de uma rede |
| earth.sc. | system diagram | esquema da rede |
| el.gen. | system operational diagram | esquema de exploração de uma rede |
| el.gen. | three-phase system diagram | esquema trifásico de uma rede |