山地车后轮旋转不流畅是什么原因?

24速山地车与27速山地车最直观的区别在于齿比范围。24速的最大传动比约为3.82,而27速则提升到了4.0,最小传动比两者基本一致,都在0.73左右。这意味着27速在高速骑行时的潜力更大。

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