电源电压不变，频率增加一倍，磁通（）。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='32654' and id < 2606479 and id<>'2606479' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='32654' and id > 2606479 and id<>'2606479' order by id asc limit 5