“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	rigid-ion approximation rigid isometric embedding rigidity rigidity condition rigidity differential equation rigidity problem rigidity result rigidity theorem rigid jumper rigid lattice rigid manifold rigid model rigid motion rigid operator extension rigid particle rigid pavement design rigid-perfectly plastic behaviour rigid-plastic finite element method rigid-plastic problem rigid polyhedron rigid pseudogroup structure rigid regulation of public opinion rigid representation of quiver rigid restriction rigid rod

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