“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	public security services public security system public security tacit knowledge application technology public security tactical command public security technology public security technology education public security technology laws and regulations public security technology standard public security technology system public security technology tactics public security technology training public security traffic command system public security video surveillance system public self Public Servants Entering the Live Room - Office HotLine on Wednesday public service public service advertising public service area public service data repository public service functions public service inequalities between urban and rural area public service of press and publication public service quality of museum public service standards of museum public service system of museum digital culture and creativity

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。