 |
| fuel valve: 211 phrases in 20 subjects |
| Armored vehicles | 7 |
| Astronautics | 33 |
| Automobiles | 12 |
| Aviation | 23 |
| Energy industry | 5 |
| Engines | 1 |
| Firefighting and fire-control systems | 3 |
| General | 5 |
| Makarov | 1 |
| Military | 11 |
| Molikpaq | 1 |
| Natural resourses and wildlife conservation | 1 |
| Nautical | 4 |
| Nuclear and fusion power | 1 |
| Nuclear physics | 1 |
| Oil and gas technology | 1 |
| Pumps | 1 |
| Technology | 85 |
| Telecommunications | 1 |
| Transport | 14 |