“eccentric reaming bit”的概念、定义、翻译、参考文献-科学参考

单词	eccentric reaming bit
释义	eccentric reaming bit Encyclopedia 工学钻井装备释 eccentric reaming bit偏心扩眼钻头常规阶梯钻头的扩眼部分的旋转轴线偏离钻柱旋转轴线一定距离，假想存在一个以钻柱旋转轴线为中心线直径等于的圆柱，仅保留扩眼部分在假想圆柱内的刀翼，同时领眼部分和上部钻柱也必须落在假想圆柱内的结构限制的钻头。
随便看	two-body elastic collision two-body force two-body interaction two body potential two-body problem two-body relaxation two-body relaxation time Two Butterflies two-by-two contingency table two-by-two table Two Capitals and Thirteen Provincial Administration Commissions two-cardinal two-channel noise figure two-channel receiver Two Charts Two-child Policy forCouples Either of Whom Is an Only Child Two-child Policy for Couples of Whom Both Are Only Children Two Chinese Bulbuls Perch on the Bamboo Branch Two Chuanqi Stories of the Chunzaitang Edition two classification two-colorable graph two-color diagram two-color hologram two-color laser ranger two-color photometry

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