| |||
| indicateur de volume; volumètre f | |||
|
electrical speech level : 4 phrases in 2 subjects |
| Communications | 2 |
| Measuring instruments | 2 |
| |||
| indicateur de volume; volumètre f | |||
|
electrical speech level : 4 phrases in 2 subjects |
| Communications | 2 |
| Measuring instruments | 2 |