retainer ring

• 挡圈

retainer ring的用法和样例：

例句

1. "A sweet temper" is a figurative expression, but "sweet coffee" is not.
   "甜蜜的性情"是个比喻的说法，而"甜咖啡"则不是。
2. A special retainer ring holds the two sealing ring faces together.
   一个特殊的固定环将密封环的表面靠在一起。