“spud in”的概念、定义、翻译、参考文献-科学参考

单词	spud in
释义	spud in Encyclopedia 工学钻前工程释 spud in开钻下入导管或各层套管后，第一只钻头开始破岩形成井眼的井下作业。又称开始钻进。
随便看	set member set minus set modulus set net fishing machinery set of all sets set of all subsets set of analyticity set of attributes set of basis vectors set of books set of cells set of complex numbers set of composition factors set of continuum power set of convergence set of curves set of decisions set of definition set of degeneracy set of degrees set of elements set of equations set of equivalent positions set of events set-off

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