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以设备综合工程学的观点,建立设备收益的数学模型,利用微分极值方法求得机械设备的最佳使用周期,即设备的经济寿命.
From the point of view of equipment engineering, a mathematical model of equipment returns is established, and the optimum life cycle of mechanical equipment is obtained by means of the differential extremum method, ie the economic life of the equipment.