注意到主动齿轮的齿数比冠状齿轮少。
Note that the input pinion is a smaller gear than the ring gear.
传动齿轮与一个很大的冠状齿轮啮合，传动齿轮驱动冠状齿轮。
The drive pinion is meshed with a large ring gear so that the ring gear revolves with the pinion.
传动齿轮与一个很大的冠状齿轮啮合，传动齿轮驱动冠状齿轮。
The drive pinion is meshed with a large ring gear so that the ring gear revolves with the pinion.
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