绕线式三相异步电动机进行串电阻调速，电机稳定以后转子磁动势的转速（    ）

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68478' and id < 4421425 and id<>'4421425' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68478' and id > 4421425 and id<>'4421425' order by id asc limit 5