当n个电压源（）时，可以用一个电压源等效，且该电压源的电压值（）.

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32670' and id < 2598737 and id<>'2598737' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32670' and id > 2598737 and id<>'2598737' order by id asc limit 5