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内容来自Android手机客户端
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ddup2007:有必要。我410就是52-11 (2017-07-24 10:40)
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411943290:你是猛男 我是38带9都吃力 (2017-07-24 10:50)
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ddup2007:我的412是47带11,和38带9齿比一样。但是从杠杆原理以及摩擦损耗来讲,飞轮越大越省力。最重要的,是便宜....... (2017-07-24 10:57)
猎鹿队长:可是飞轮和牙盘小的轻啊[表情] (2017-07-30 11:02)
chnj10:谢谢!奇怪反而是粗胎速度快?按理说1.25的阻力小啊。 (2017-07-30 00:35)
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