 |
| |||
| 横梁; 横臂 | |||
| top bridge: 12 phrases in 4 subjects |
| Bridge construction | 6 |
| Hydroelectric power stations | 1 |
| Rail transport | 1 |
| Technology | 4 |
|
| |||
| 横梁; 横臂 | |||
| top bridge: 12 phrases in 4 subjects |
| Bridge construction | 6 |
| Hydroelectric power stations | 1 |
| Rail transport | 1 |
| Technology | 4 |