| |||
| 设计原则 | |||
| 设计原理 | |||
|
principle of design : 4 phrases in 4 subjects |
| Bridge construction | 1 |
| Ecology | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Rail transport | 1 |
| |||
| 设计原则 | |||
| 设计原理 | |||
|
principle of design : 4 phrases in 4 subjects |
| Bridge construction | 1 |
| Ecology | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Rail transport | 1 |