“directional circulation drilling”的概念、定义、翻译、参考文献-科学参考

单词	directional circulation drilling
释义	directional circulation drilling Encyclopedia 理学钻进方法释 directional circulation drilling正循环钻进冲洗介质经钻杆内腔流向孔底，将钻头切削破碎下来的钻渣岩屑，经钻杆与孔壁的环状空间携带至地面的钻探循环方式。
随便看	workspace workspace design Works Progress Administration workstation work stress work-study education Works Written in My Humble Library work system of project engineering standardization work-technic education Work Values Inventory world world advertising conference World Affairs World Agroforestry Centre World Air Routes World Air Sports Federation World Alliance of Reformed Churches (Presbyterian and Congregational) World Anti-Doping Agency World Anti-Doping Code World Aquaculture Society World Archery Federation World Art World Art History·Dance Volume World Assembly on Aging Plan of Action World Assembly on aging,Vienna

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