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sh1986ye:你去看一下固體物理的晶格振動和固體光學就知道了(2012-11-13 20:10)嬀/color] ~iIFe+6
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strategy:怎么可以用機械波的方式去理解電磁波?(2012-11-16 00:29)嬀/color] ?tYc2R9x6"