| |||
| характеристика распространения (волны) | |||
|
propagation characteristic : 4 phrases in 3 subjects |
| Acoustics | 1 |
| Electronics | 1 |
| Technology | 2 |
| |||
| характеристика распространения (волны) | |||
|
propagation characteristic : 4 phrases in 3 subjects |
| Acoustics | 1 |
| Electronics | 1 |
| Technology | 2 |