 |
| water valve: 100 phrase in 28 subjects |
| Astronautics | 5 |
| Automated equipment | 5 |
| Automobiles | 2 |
| Construction | 7 |
| Drilling | 1 |
| Electrical engineering | 1 |
| Electronics | 12 |
| Energy industry | 3 |
| Engineering | 1 |
| Firefighting and fire-control systems | 1 |
| General | 2 |
| Hydrography | 1 |
| Machine tools | 1 |
| Machinery and mechanisms | 1 |
| Makarov | 1 |
| Mechanic engineering | 2 |
| Metallurgy | 3 |
| Molikpaq | 2 |
| Natural resourses and wildlife conservation | 1 |
| Nautical | 1 |
| Nuclear and fusion power | 1 |
| Oil / petroleum | 3 |
| Pipelines | 6 |
| Production | 4 |
| Refrigeration | 6 |
| Shipbuilding | 1 |
| Technology | 24 |
| Thermal engineering | 2 |