“drag bit”的概念、定义、翻译、参考文献-科学参考

单词	drag bit
释义	drag bit Encyclopedia 工学钻井装备释 drag bit刮刀钻头以刮削方式破碎井底岩石的、带有刮刀片的钻头。
随便看	core analysis core and mantle structure core and periphery core-annulus flow core area of nature reserve core barrel core-based tree core-based tree, CBT core box core collapse core-collapse progenitor core collapse supernova core collection core competence analysis Core competencies core competency/key skill core competitiveness of library core compression core conflictual relational theme core conversion ratio core course core description cored forging/multi-ram forging core disc core-dominated quasar

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。