Toothed rack on the connecting rod is engaged with gear in turn.
连杆上的齿条与齿轮依次啮合。
The first transitional shaft is engaged with a second transition shaft through a gear shaft;
第一过渡轴通过轴齿轮与第二过渡轴的轴齿轮啮合；
The first transitional shaft is engaged with a second transition shaft through a gear shaft;
第一过渡轴通过轴齿轮与第二过渡轴的轴齿轮啮合；
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