“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	ontology base ontology building ontology construction ontology editor ontology engineering ontology evolution Ontology-Hysteria Drama ontology language ontology learning ontology maintaining engineering ontology mapping ontology matching ontology merging Ontology of Art ontology of dance ontology of historiography ontology of information science ontology of literature Ontology of Social Being Ontology of the Work of Art ontology presentation ontology query language ontology revision ontology stack structure of description language ontology system

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