 |
| |||
| открытие клапана | |||
| valve crack: 12 phrases in 9 subjects |
| Apollo-Soyuz | 1 |
| Drilling | 1 |
| Firefighting and fire-control systems | 2 |
| Nautical | 2 |
| Oil / petroleum | 1 |
| Oil and gas | 2 |
| Rail transport | 1 |
| Shipbuilding | 1 |
| Technology | 1 |
|
| |||
| открытие клапана | |||
| valve crack: 12 phrases in 9 subjects |
| Apollo-Soyuz | 1 |
| Drilling | 1 |
| Firefighting and fire-control systems | 2 |
| Nautical | 2 |
| Oil / petroleum | 1 |
| Oil and gas | 2 |
| Rail transport | 1 |
| Shipbuilding | 1 |
| Technology | 1 |