 |
| |||
| stepping-store method | |||
| bench tunneling method | |||
| bench cut method (隧道开挖); benching tunneling method (隧道开挖); benching tunnelling method (隧道开挖) | |||
| 台阶法: 33 phrases in 7 subjects |
| Engineering geology | 2 |
| Explosives and Explosive Ordnance Disposal | 7 |
| Hydroelectric power stations | 1 |
| Metallurgy | 2 |
| Mountaineering | 1 |
| Rail transport | 4 |
| Technology | 16 |