 |
| |||
| acoustic transducer | |||
| sound transducer | |||
| звуковой преобразователь: 4 phrases in 4 subjects |
| Geophysics | 1 |
| Security systems | 1 |
| Technology | 1 |
| Telecommunications | 1 |
|
| |||
| acoustic transducer | |||
| sound transducer | |||
| звуковой преобразователь: 4 phrases in 4 subjects |
| Geophysics | 1 |
| Security systems | 1 |
| Technology | 1 |
| Telecommunications | 1 |