衡量电介质损耗的大小用（）表示。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32664' and id < 2597745 and id<>'2597745' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32664' and id > 2597745 and id<>'2597745' order by id asc limit 5