同步发电机中，定子绕组通常采用双层（）叠绕组。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32686' and id < 2599972 and id<>'2599972' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32686' and id > 2599972 and id<>'2599972' order by id asc limit 5