| |||
| 暗管系统 | |||
|
subsurface system : 15 phrases in 6 subjects |
| Geophysics | 1 |
| Hydroelectric power stations | 1 |
| Nautical | 1 |
| Oil / petroleum | 2 |
| Technology | 8 |
| Water resources | 2 |
| |||
| 暗管系统 | |||
|
subsurface system : 15 phrases in 6 subjects |
| Geophysics | 1 |
| Hydroelectric power stations | 1 |
| Nautical | 1 |
| Oil / petroleum | 2 |
| Technology | 8 |
| Water resources | 2 |