 |
| system – hydraulic: 146 phrases in 24 subjects |
| Aerohydrodynamics | 2 |
| Astronautics | 10 |
| Automated equipment | 1 |
| Automobiles | 3 |
| Aviation | 2 |
| Construction | 2 |
| Drilling | 1 |
| Ecology | 1 |
| Energy industry | 5 |
| Firefighting and fire-control systems | 2 |
| General | 1 |
| Logistics | 1 |
| Makarov | 3 |
| Mechanics | 1 |
| Military | 3 |
| Nautical | 3 |
| Nuclear and fusion power | 1 |
| Oil / petroleum | 4 |
| Oil and gas | 3 |
| Oilfields | 4 |
| Sakhalin | 1 |
| Technology | 75 |
| Thermal engineering | 3 |
| Transport | 14 |