“shaft drilling”的概念、定义、翻译、参考文献-科学参考

单词	shaft drilling
释义	shaft drilling Encyclopedia 工学竖井施工方案释 shaft drilling竖井凿岩竖井施工中，在井筒围岩上钻凿炮孔的作业。是竖井掘进中的一项主要工序，约占整个掘进循环时间的20%～30%。
随便看	cathodic protection cathodic protection device cathodic protection of pipeline cathodic protection with impressed current cathodic protection with sacrificial anodes cathodic stripping voltammetry cathodochromic cathodoelectroluminescence cathodogram cathodograph cathodo luminescence cathodoluminescence cathodoluminescence measurement cathodoluminescent materials cathodophosphorescence Catholic modernism Catholic Reformation catholyte Cathysia Cathy Song CATI Catiline Conspiracy catination cation cation-adsorption

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