 |
| 滤清: 172 phrases in 19 subjects |
| Automobiles | 7 |
| Aviation | 2 |
| Chemistry | 1 |
| Construction | 3 |
| Drilling | 1 |
| Electronics | 3 |
| Food industry | 1 |
| Forestry | 2 |
| General | 55 |
| Hydraulics | 1 |
| Mechanic engineering | 1 |
| Metallurgy | 3 |
| Military | 5 |
| Mining | 1 |
| Nautical | 2 |
| Oil / petroleum | 5 |
| Oil processing plants | 7 |
| Oilfields | 1 |
| Technology | 71 |