“tower assembly”的概念、定义、翻译、参考文献-科学参考

单词	tower assembly
释义	tower assembly Encyclopedia 工学钻井装备释 tower assembly塔式钻具由下大上小的几段不同尺寸钻铤组成的钻具组合。利用近钻头端大尺寸钻铤的钟摆力进行纠斜。
随便看	invariant class of groups invariant complement invariant component invariant cone invariant continuation invariant curve invariant decision function invariant decision problem invariant decision procedure invariant decomposition invariant definition invariant delta-function invariant density invariant derivative invariant differential invariant differential equation invariant differential form invariant differential operator invariant dimension property invariant distance invariant distribution invariant divisor invariant element invariant embedding invariant embedding method

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