电机铁芯一般工作在磁化曲线的（      ）

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68475' and id < 4421148 and id<>'4421148' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68475' and id > 4421148 and id<>'4421148' order by id asc limit 5