際際滷

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Ag Zn Na Cu Fe Hg Au AI Pb CI S C
 - - = 4Fe+3O 2 =2Fe 2 O 3 2Mg+O 2  =2MgO 2Cu+O 2 =2CuO 4AI+3O 2 =2AI 2 O 3 2Zn+O 2 =2ZnO Fe-----Cu Fe------Zn
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