round nut

• 圆螺母,环形螺帽

round nut的用法和样例：

例句

1. A large nut to be removed had frozen to its bolt.
   一只要拿掉的大螺帽咬住了螺拴，旋不下来了。
2. Install the bushing by tightening the Long Nut.
   通过扭紧长螺帽来安装衬套。