 |
| вентиляционная шахта: 18 phrases in 10 subjects |
| Astronautics | 3 |
| Energy industry | 1 |
| Firefighting and fire-control systems | 1 |
| General | 1 |
| Geology | 1 |
| Mining | 5 |
| Nautical | 1 |
| Shipbuilding | 3 |
| Technology | 1 |
| Wood processing | 1 |
|
| вентиляционная шахта: 18 phrases in 10 subjects |
| Astronautics | 3 |
| Energy industry | 1 |
| Firefighting and fire-control systems | 1 |
| General | 1 |
| Geology | 1 |
| Mining | 5 |
| Nautical | 1 |
| Shipbuilding | 3 |
| Technology | 1 |
| Wood processing | 1 |