“casing drilling”的概念、定义、翻译、参考文献-科学参考

单词	casing drilling
释义	casing drilling Encyclopedia 工学套管钻井释 casing drilling套管钻井用套管代替传统钻杆作为钻柱，将顶驱或转盘上的机械动力和泥浆泵的液压动力传递到钻头，套管柱在钻进的同时起到封隔井眼和地层作用的技术。
随便看	general reciprocity law general records General Records of Holy Universal Relief general recursive function general recursive operator general recursive predicate general recursive relation general recursive sequence general recursive set general recursivity general refractive index general regression General Regulations for the Capital Library and Provincial Libraries general-relativistic effect general relativity General Relativity and Gravitation general relativity theory general renewal process General requirements for equipment in aircraft General Requirements of Trim Size and Type Area for Primary and Secondary School Textbooks General Research Institute for Nonferrous Metals General Research of Sound and Temperament general Riccati equation general ring general ring algorithm

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