heading and bench
| tunneling method
| heading and bench | |
| expl. | 平巷梯段掘进法 |
| tunneling method | |
| road.constr. од. | 掘进方法 |
| |||
| 平巷梯段掘进法坚硬岩石巷道的掘进方法 | |||
|
heading and bench : 19 phrases in 5 subjects |
| Engineering geology | 1 |
| Explosives and Explosive Ordnance Disposal | 4 |
| Hydroelectric power stations | 1 |
| Road construction | 1 |
| Technology | 12 |