钳形电流表由电流互感器和带（）的磁电式表头组成。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='27214' and id < 2260455 and id<>'2260455' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27214' and id > 2260455 and id<>'2260455' order by id asc limit 5