发布时间:2025-01-31 00:35:29
看什么样的铁,硬度多少,铸铁 还是纯铁,钢铁,碳钢 合金钢?含碳量高低, 等等,差别很大的,还有要看你的刀怎么处理的处理后硬度多少,开刃角度大小,被砍铁 钢铁的 形制比如厚度多少
总之一句话 想砍完铁后自身毫发无损是不可能的,肯定会有损伤,削铁如泥只是武侠小说中才会有的,知道物理常识的都明白这个道理
家里楼顶天花板被楼上装修施工打固定螺钉打穿孔后最可靠修补工艺推荐麻烦有验证过的方案推荐
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