“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	literature ideological trend literature image Literature in Malay by the Chinese of Indonesia literature in the period of Northeast fall Literature Life Series literature logical view Literature Magazine literature management literature media literature method Literature Monthly Literature of Chinese Opera Literature of isolated island Literature of Jin Dynasty Literature of Liao Dynasty literature of Ming Dynasty Literature of Nationalism literature of Northern Dynasties Literature of Paddy Rice Planting literature of Pre-Qin literature of records of eminent monks Literature of Silhak-School literature of Song Dynasty literature of Southern Dynasties literature of Sui、Tang and Five Dynasties

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