| 单词 | tension packer |
| 释义 | tension packer [`ten·chǝn `pak·ǝr] PETROLEUM ENGINEERING A device to pressure-seal the annular space between an oil-well casing and tubing, held in place by tension against an upward push; a type of production packer. |
| 随便看 |
科学参考收录了103327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。