异步电动机的机械负载增大，则转子回路的（   ）。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69445' and id < 4497278 and id<>'4497278' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69445' and id > 4497278 and id<>'4497278' order by id asc limit 5