The connecting rod is attached at one end to a crankpin on the crankshaft and at the other end to a piston, through a piston pin or wrist pin.
连杆的一端与曲轴的连杆轴颈相连，另一端通过活塞销与活塞相连。
When the piston is moved by vacuum, its velocity changes in steps, for the mass of piston pin and rod are connected in turn.
当活塞在真空作用下运动时，由于活塞销和连杆的质量是依次连接的，活塞速度呈阶梯式变化。
The connecting rod is attached to the piston by the piston pin.
连杆与活塞的连接是采用活塞销。
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