“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	circle notation circle of altitude circle of antisimilitude circle of confusion circle of contact circle of convergence circle of curvature circle of declination circle of equal altitudes circle of friends circle of geodesic curvature circle of inversion circle of least confusion circle of longitude circle of meromorphy circle of perpetual apparition circle of perpetual occultation circle of position circle of qi in qigong exercise circle of reference circle of right ascension circle of similarity circle order circle orthotomic circle packing

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