gear speed shifting mechanism 齿轮变速机构
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The other speed shifting mechanism is a shaft of the driven gear that is provided with a tooth driving wheel that puts the roll shaft in motion through transmission.
另一个动力辊变速 机构是：在所述从动齿轮介轴上还装有齿系传动轮，该齿系传动轮 将运动副传递给上辊轴。
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