()的出现是区分正常运行、过负荷、系统振荡及相间短路的基本特征。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69548' and id < 4506944 and id<>'4506944' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69548' and id > 4506944 and id<>'4506944' order by id asc limit 5