 |
| |||
| 河床变形 | |||
| river-bed deformation: 3 phrases in 3 subjects |
| Bridge construction | 1 |
| Engineering geology | 1 |
| Hydroelectric power stations | 1 |
|
| |||
| 河床变形 | |||
| river-bed deformation: 3 phrases in 3 subjects |
| Bridge construction | 1 |
| Engineering geology | 1 |
| Hydroelectric power stations | 1 |