 |
| |||
| 壁孔 | |||
| 扩槽炮孔巷道掘进时，除掏槽孔、辅助掏槽孔、周边孔以外，将掏槽向周围横向扩大的炮孔 | |||
| 墙孔 | |||
| wall hole: 28 phrases in 9 subjects |
| Aviation | 1 |
| Compressors | 1 |
| Drilling | 1 |
| Engineering geology | 2 |
| Explosives and Explosive Ordnance Disposal | 2 |
| General | 5 |
| Oil / petroleum | 2 |
| Technology | 13 |
| Wind Energy | 1 |
The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Add | The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Report an error
| Get short URL | Language Selection Tips