频敏变阻器其构造与三相电抗相似，即由三个铁芯柱和（）绕组组成。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='27221' and id < 2260195 and id<>'2260195' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27221' and id > 2260195 and id<>'2260195' order by id asc limit 5