 |
| 瓦管: 245 phrases in 26 subjects |
| Agriculture | 11 |
| Architecture | 7 |
| Automobiles | 1 |
| Aviation | 1 |
| Bridge construction | 2 |
| Business | 1 |
| Chemistry | 1 |
| Company name | 1 |
| Drilling | 4 |
| Earth sciences | 1 |
| Ecology | 1 |
| Electronics | 6 |
| General | 3 |
| Hydraulics | 21 |
| Hydroelectric power stations | 7 |
| Metallurgy | 7 |
| Oil / petroleum | 26 |
| Otorhinolaryngology | 1 |
| Plastics | 1 |
| Space | 3 |
| Surgery | 1 |
| Technology | 131 |
| Textile industry | 2 |
| United Nations | 2 |
| Water resources | 2 |
| Wind Energy | 1 |