怀疑是因为铝合金的热膨胀系数是铁的两倍的原因

来源: MoonRiverMe 于 2023-04-25 15:11:41 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

车轱辘一热一冷一伸一缩加上颠簸就松动了.

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