| |||
| frequência variável | |||
|
variable frequency : 5 phrases in 3 subjects |
| Electric traction | 1 |
| Electronics | 3 |
| Mechanic engineering | 1 |
| |||
| frequência variável | |||
|
variable frequency : 5 phrases in 3 subjects |
| Electric traction | 1 |
| Electronics | 3 |
| Mechanic engineering | 1 |