“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	pollution control system of cargo terminal pollution control technology Pollution damage assessment pollution discharge outlets pollution discharge permit system pollution ecology pollution export pollution exposure dose pollution exposure-response relationship pollution from tailings pollution halo hypothesis pollution haven hypothesis pollution indicator plant pollution indicator species pollution-intensive industry Pollution Load pollution of agricultural inputs pollution of motor vehicle exhaust gases pollution of natural water pollution prevention and control of key water basins pollution prevention law Pollution Probe Foundation，Canada pollution-resisting species of tree pollution rights trading market pollutions emitted from fossil-fired power plant

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。