| 单词 | runback |
| 释义 | runback [`rǝn´bak] CHEMICAL ENGINEERING A pipe through which all or part of a distillation column's overhead condensate can be run back into the column, instead of being drawn off as product. ENGINEERING 1. To retract the drill feed mechanism to its starting position. 2. To drill slowly downward toward the bottom of the hole when the drill string has been lifted off-bottom for rechucking. |
| 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。