 |
| 通风井: 68 phrases in 14 subjects |
| Architecture | 2 |
| Earth sciences | 1 |
| Economy | 1 |
| Electric machinery | 2 |
| Electronics | 4 |
| Engineering geology | 2 |
| Explosives and Explosive Ordnance Disposal | 1 |
| General | 2 |
| Hydroelectric power stations | 3 |
| Metallurgy | 1 |
| Refrigeration | 2 |
| Space | 1 |
| Technology | 45 |
| Wind Energy | 1 |