 |
| |||
| 填石的 | |||
|
stone-filled : 40 phrases in 4 subjects |
| Bridge construction | 5 |
| Engineering geology | 3 |
| Hydroelectric power stations | 5 |
| Technology | 27 |
|
| |||
| 填石的 | |||
|
stone-filled : 40 phrases in 4 subjects |
| Bridge construction | 5 |
| Engineering geology | 3 |
| Hydroelectric power stations | 5 |
| Technology | 27 |