英语语法分析

The rod-bearing cap attaches the connecting rod to the crankpin.

安装下轴瓦到主轴承盖。

As the crankshaft rotates, the crankpin swings in a circle around the shaft.

随著曲轴的转动，曲柄销绕主轴作圆周摆动。

The cap and rod have bearings which permit the crankpin to rotate freely within the rod.

轴瓦盖和连杆中有轴瓦，它允许连杆内的曲柄锁自由地转动。