“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	natural gas geology natural gas heating system natural Gas Hydrate natural gas hydrate Natural Gas Industry natural gas liquefaction natural gas liquefaction plant natural gas liquefaction process natural gas liquefaction system natural gas liquid natural gas liquid (NGL) natural gas liquid pipeline natural gas loss ratio natural gas measurement natural gasoline natural gas partial-oxidation conversion natural gas pipeline Natural Gas Pipeline System of Central Asia-Central District natural gas pipeline system of central Asia-central district natural gas processing natural gas purification natural gas pyrolysis natural gas reserves natural gas reservoir natural gas reservoir-production ratio

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