单词：wrist pin
wrist pin的用法和样例：
例句
- A piston pin fits into a round hole in the piston.活塞销装在活塞的环形的孔里。
- The piston end of the rod is attached to the piston by the piston pin, or wrist pin.连杆的活塞端用活塞销或销轴安装在活塞上。
- gudgeon pin轴头销
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