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引用第3楼crab于2008-04-20 12:08发表的 :这个问题的确比较难啊........ {7)D/WY5 理论指导工程实践......... Y$ ;C@I 可电磁理论基本以数学推导为主线,要搞懂其物理意义也不容易..........
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