 |
| |||
| 矿井 | |||
| 地下矿山采用地下开采方式开采矿产资源的生产经营单位 | |||
| underground mine: 8 phrases in 3 subjects |
| China | 2 |
| Explosives and Explosive Ordnance Disposal | 5 |
| Technology | 1 |
|
| |||
| 矿井 | |||
| 地下矿山采用地下开采方式开采矿产资源的生产经营单位 | |||
| underground mine: 8 phrases in 3 subjects |
| China | 2 |
| Explosives and Explosive Ordnance Disposal | 5 |
| Technology | 1 |