非正弦周期量的有效值等于其直流分量及各次谐波有效值的平方和的平方根。（）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32635' and id < 2595056 and id<>'2595056' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32635' and id > 2595056 and id<>'2595056' order by id asc limit 5