 |
| |||
| ring main system | |||
| primary series circuit | |||
| power circuit; main circuit; traction circuit | |||
|
circuit principal : 12 a las frases, 8 temas |
| Agricultura | 1 |
| Ambiente | 1 |
| Computadores | 1 |
| Física nuclear | 1 |
| General | 1 |
| Ingenieria eléctrica | 1 |
| Tecnología de la información | 1 |
| Transporte | 5 |