Chap4-2 - 4 2 4 2...

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Unformatted text preview: 4- 2 4- 2 平平平平平平平平平平平平平平平平平平4- 2 4- 2 平平平平平平平平平平平平平平平平平平§(Characterizationof four-bar linkages)平平平平平平平平平平平平平平平平平平平平平平平平平平平平C1432bdcaDBA平平平平平 ABCD平平平平平平平 a, b, c , d.平平平平 a 平平平平平平平平平平 a<d 平平平 d 平平平平平 平平平平平平平∆BCDB Dcb≥+B Dcb≤-B Dbc≤-平平平平平平平平平平平 , BD平平平平平daBDmax+=;adBDmin-=平平平平平平平平平C1432bdcaDBAB Dcb≥+B Dcb≤-B Dbc≤--=≤--=≤-+=≥+adBDbcadBDcbdaBDcbminminm ax平平⋅⋅⋅⋅⋅⋅⋅⋅+≤+⋅⋅⋅⋅⋅⋅⋅⋅+≤+⋅⋅⋅⋅⋅⋅⋅⋅+≤+)3(bdca)2(cdba)1(cbda平 ( 1) +( 2) 平 ( 2) +( 3) 平 ( 3) +( 1)da,ca,ba≤≤≤平平平平平平平 a>d, 平平 d 平平平平平平平平平平bd,cd,ad≤≤≤平平平平平平平 a 平平平 :平平平平平平平平平平平平平平平平平平平平平平平平平平平::平平平平平平平平平平平平平平平平1 平平平平平平平平平平平平平平平平平平平平平平平平平平平平2 平平平平平平平平平平平平平平平平平平平平平平“平平平平平 + 平平平平平 平平平平平平平平”平 ,≤1.1.平平平平平平平平平平平平平平平平平平平平平平平平平平平平平平; 2....
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Chap4-2 - 4 2 4 2...

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