机械设计基础
- 培训职业
- 2025-08-04 23:45:38
(a)F=3n-2PL-PH=3*9-2*12-2=1;(有确定运动)
(b)F=3n-2PL-PH=3*5-2*4-2=5;(无确定运动)
(c)F=3n-2PL-PH=3*6-2*8-1=1;(有确定运动)
(d)F=3n-2PL-PH=3*7-2*10-0=1;(有确定运动)
(a)F=3n-2PL-PH=3*9-2*12-2=1;(有确定运动)
(b)F=3n-2PL-PH=3*5-2*4-2=5;(无确定运动)
(c)F=3n-2PL-PH=3*6-2*8-1=1;(有确定运动)
(d)F=3n-2PL-PH=3*7-2*10-0=1;(有确定运动)
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