“偏心扩眼钻头”的概念、定义、翻译、参考文献-科学参考

单词	偏心扩眼钻头
释义	偏心扩眼钻头 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	UltraFlo 过滤材料 ultragraph ultragravity wave ultragroup ultraharmonic oscillation ultraharmonics ultra-heavy ultrahigh carbon steel ultra high definition television，UHDTV ultra-high-dimensional data ultra-high energy ultrahigh energy ultra-high energy cosmic ray ultrahigh energy cosmic ray ultra-high energy γ-rays Ultra High Frequence-Follow-On Satellite ultra-high frequency ultrahigh frequency ultra high frequency amplification ultra high frequency generation ultra high frequency generation and amplification ultra high frequency method ultra high frequency radio physics ultra high frequency radio wave propagation ultra high frequency transmission line

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