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凸轮机构中,从动件在推程时按等速规律上升,将在( )位置发生刚性冲击。
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凸轮机构中,从动件在推程时按等速规律上升,将在( )位置发生刚性冲击。
A、推程开始点
B、推程结束点
C、开始点和结束点
D、推程一半位置
时间:2021-07-17 23:45
关键词:
建筑环境与能源应用工程
专升本
机械设计基础
期末考试
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C
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凸轮机构中,从动件在推程时按等速规律上升,将在( )位置发生刚性冲击。
凸轮机构中,从动件在推程时按等速规律上升,将在( )位置发生刚性冲击。
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