 |
| |||
| scattering layer (SL) | |||
| слой звукорассеивающий: 8 phrases in 6 subjects |
| Acoustics | 1 |
| Geography | 1 |
| Nautical | 1 |
| Navigation | 3 |
| Sakhalin | 1 |
| Technology | 1 |
|
| |||
| scattering layer (SL) | |||
| слой звукорассеивающий: 8 phrases in 6 subjects |
| Acoustics | 1 |
| Geography | 1 |
| Nautical | 1 |
| Navigation | 3 |
| Sakhalin | 1 |
| Technology | 1 |