搜索 - 科创

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引用 xiaotian99:好象不关电阻的事哦，铁，铝的电阻都很小，石墨也是啊。但是通常铁很容易被感应加热，是因为铁有磁性，而铝和石墨没有。这是我的认为，个人观点！

当我们能发现和理解外表下的能量场时，铁钉吸住了磁铁，还是磁铁吸住了铁钉已经不在重要。这就是为什么不的问题。当我们再去看金属颗粒的自组织现象的时候，我们会理解到，那就像船到桥头自然直一样，自然。

首饰无非就是金银铂这些，不过我没见过用铁粉来做砂型的，我小时候看到过打首饰的，把铁皮卷成一个圆柱形，小小的一个，“铁桶”，里面的砂型是一种白色粉末，然后就放在火上使劲烧，完了拿出来往水里一扔，在一敲铁桶

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