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将模糊数学理论应用于起重机机械系统的可靠性分析,推导了起重机模糊随机可靠度计算式和零部件的隶属函数,并给出了计算实例,为起重机的设计提供了有益的依据“,”A fuzzy mathematical theory is applied to a reliability analysis of mechanical crane system. Computing formula of crane fuzzy randons reliability and membership function of mechanical elements are derived, and some calculation is exemplified. A valuable basis for crane design is provided.