“dual-wall drill pipe”的概念、定义、翻译、参考文献-科学参考

单词	dual-wall drill pipe
释义	dual-wall drill pipe Encyclopedia 理学孔内钻具释 dual-wall drill pipe双壁钻杆具有两个流体通道的钻杆。
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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。