“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	nedocromil nedocromil; tilade need Needham Needham Research Institute Needing You needle Needle and Thread needle beam needle board needle cast needle coke Needle Galaxy needle grasping method needle-handle shaking method needle-holding hand needle insertion method Needleleaf Forest needleleaf sedge needle-leaved plant needle-leaved tree needle loom shaft Needleman-Wunsch algorithm needle point needle problem

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。