学力学/机械制造的给说说，那个大斧头是2000年前制造的吗？斧子柄和斧子比例如何？用那玩意的还能不死？

来源: coach1960 于 2019-11-24 08:42:06 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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