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内容来自Android手机客户端
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weiyu:链条一会紧一会松是怎么回事?牙盘转一圈,链条有紧有松,有点卡时,链条就紧。是不是链条不好啊。 (2019-04-13 21:07)
ddup2007:不是链条问题,是牙盘不圆 (2019-04-13 22:36)