平面四杆机构中急回特性和（ ）有关系。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='24894' and id < 2124493 and id<>'2124493' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24894' and id > 2124493 and id<>'2124493' order by id asc limit 5