拉開帷幕，看到了一對磁鐵，磁場很強，粘在一起，拉都拉不開，老鐵被磁化了 : )

來源: 北美老木匠於 2011-03-18 14:11:46 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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