关于自行车的物理题?
关于自行车的物理题?
自行车的有些部位需要减小摩擦力,那么除了在它的轴承减小,其他的什么部位还可以减小?
自行车的有些部位需要减小摩擦力,那么除了在它的轴承减小,其他的什么部位还可以减小?
其他人气:485 ℃时间:2020-03-19 18:07:45
优质解答
自行车的链条与踏板的外盘还有后轮的肺(齿轮)之间的摩擦力.
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