mine shaft drilling的意思|示意
矿井钻孔
mine shaft drilling的网络常见释义
反井钻机 ...章摘要信息 关键词 ： 钻井法凿井；竖井钻机；反井钻机；竖井掘进机；岩石破碎 [gap=1268]Keywords : mine shaft drilling；shaft boring machine；raise boring machine；full face shaft boring machine；rock crushing ..
mine shaft drilling相关短语
1、 mine shaft drilling detail 井筒钻进
mine shaft drilling相关例句
Aiming at the fractured mechanism of mine shaft lining under the condition of stratum subsiding, a new type of retractable drilling shaft lining structure was proposed.
针对地层沉降条件下煤矿立井井壁的破坏机理，提出了一种新型可缩性钻井井壁结构。