“automatic vertical drilling system”的概念、定义、翻译、参考文献-科学参考

单词	automatic vertical drilling system
释义	automatic vertical drilling system Encyclopedia 工学定向井工具释 automatic vertical drilling system自动垂直钻井系统能够将所钻井段的井斜控制在一定角度范围内（通常不大于3°）的井下闭环自动控制钻井工具组合。
随便看	principal axes principal axes of stress principal axis principal-axis method principal axis of inertia principal axis of strain principal axis solution principal axis transformation principal-axis transformation principal band principal base principal bending moment principal block principal branch principal bronchus principal bundle principal bundle connection principal category principal cell principal character principal circle principal class principal coefficient of contraction principal cohomology class principal coincidence curve

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