| |||
| frequência de ensaio | |||
|
test frequency : 7 phrases in 4 subjects |
| Electric motors | 1 |
| Mechanic engineering | 1 |
| Sound recording | 1 |
| Technology | 4 |
| |||
| frequência de ensaio | |||
|
test frequency : 7 phrases in 4 subjects |
| Electric motors | 1 |
| Mechanic engineering | 1 |
| Sound recording | 1 |
| Technology | 4 |