硐室掘进
- 网络chamber excavation; room driving
硐室掘进硐室掘进
chamber excavation
采矿专业英语大全 - 豆丁网 ... 硐室爆破 chamber blasting 硐室掘进 chamber excavation 断层 fault ...
room driving
driving rain是什么意思_driving... ... 15. raise driving 上山掘进 16. room driving 硐室掘进 ...