诺顿定理指出，求等效电阻时需将有源线性二端网络内所有独立源（）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32630' and id < 2594676 and id<>'2594676' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32630' and id > 2594676 and id<>'2594676' order by id asc limit 5