变压器励磁涌流含有大量高次谐波，其中以（  ）谐波为主。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69479' and id < 4501025 and id<>'4501025' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69479' and id > 4501025 and id<>'4501025' order by id asc limit 5