“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	control point of sea-floor control points control pole modulation control problem control process control processing unit control program control project of sandstorm source in Beijing and Tianjin in China control question test control range control reconfiguration control red line of water resource development and utilization control red line of water use efficiency control register control resolution control reversal control rocket control rod control rod assembly control rod drive mechanism control-rod guide control-rod worth control room for thermal power unit control scheduling control screen

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