 |
| 净化 的: 80 phrases in 23 subjects |
| Agriculture | 1 |
| Animal husbandry | 2 |
| Architecture | 1 |
| Automobiles | 3 |
| Ceramics | 1 |
| Ecology | 5 |
| Electric machinery | 2 |
| Electronics | 6 |
| Engineering geology | 1 |
| Environment | 2 |
| General | 6 |
| Genetics | 2 |
| Geology | 1 |
| Hydroelectric power stations | 1 |
| Metallurgy | 2 |
| Oil / petroleum | 1 |
| Plastics | 2 |
| Project management | 1 |
| Technology | 33 |
| Telecommunications | 1 |
| United Nations | 3 |
| Ventilation | 1 |
| Water resources | 2 |