| 单词 | safety pinion |
| 释义 | safety pinion [`sāf·tē ´pin·yǝn] HOROLOGY A center pinion gear in a watch that protects delicate parts by unscrewing when the mainspring breaks, thereby preventing pressure from being applied to the train wheel teeth and arbor pivots. |
| 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。