非正弦周期量的有效值等于它各次谐波有效值之和。（）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32635' and id < 2595050 and id<>'2595050' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32635' and id > 2595050 and id<>'2595050' order by id asc limit 5