转子为圆柱形，气隙均匀的同步电机为（）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32686' and id < 2599962 and id<>'2599962' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32686' and id > 2599962 and id<>'2599962' order by id asc limit 5