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内容来自Android手机客户端
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wyhua:各有优缺点,齿比还是看个人的腿力和喜欢的踏频,就比如单速412,我看坛子里非常非常多的人在踩47带9,不知道他们爬坡时候是啥感受。 (2015-07-06 09:29)
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liuboyu:理论上轮径小省力我觉得还要考虑到胎宽胎压吧 (2015-07-06 09:44)
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