 |
| 滤水器: 111 phrases in 19 subjects |
| Agriculture | 2 |
| Automobiles | 3 |
| Aviation | 2 |
| Drilling | 4 |
| Earth sciences | 1 |
| Ecology | 7 |
| Electronics | 14 |
| Engineering geology | 2 |
| General | 2 |
| Hydroelectric power stations | 3 |
| Metallurgy | 4 |
| Nautical | 5 |
| Nuclear and fusion power | 1 |
| Oil / petroleum | 2 |
| Rail transport | 1 |
| Refrigeration | 2 |
| Shipbuilding | 3 |
| Space | 1 |
| Technology | 52 |