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='69041' and id < 4468225 and id<>'4468225' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69041' and id > 4468225 and id<>'4468225' order by id asc limit 5