“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	Quodlibet Qu Opera Troupe of Beijing quorum quorum quenching Quorum sensing quorum sensing quorum sensing of bacteria quota quota for non-leadership posts quota game quota management quota ring quota rule quota sample Quota Sampling quota sampling quota share reinsurance quota system quotation Quotations from Jigong the Crazy Monk quotations from masters of Zen Quotations from Wenyi Written by Huang Tingjian Quotation Style quotation style Quotes of Taoist Canon

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