“shaft boring”的概念、定义、翻译、参考文献-科学参考

单词	shaft boring
释义	shaft boring Encyclopedia 工学特殊凿井法释 shaft boring矿山钻井法用钻井机钻凿竖井井筒的特殊凿井法。在地面采用大直径钻井机向地层钻进竖井，以洗井液护壁并排渣，悬浮下沉预制井壁作为永久支护，实现人员不下井的机械化凿井方法。
随便看	cast-in-site concrete cast-in-situ concrete structure cast iron cast iron lion of Cangzhou cast iron pagoda at Dangyang City cast iron pipe Castle Elmina Castle Howard Castleman's disease Castle of Buda Castle of Otranto castle-rim function cast magnesium alloy cast magnesium-rare earth alloy cast molding Castor CAStorage castor oil castor seed castor silk castor silkworm cocoon castor thrips cast polymerization Castra castration

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