在假设销售商允许消费者退货，且退回物品经一个滞后期修复处理后仍然可和“新产品”一样销售的条件下，提出了一个扩展的EOQ订货模型。
Assuming that product taturn is permitted and the recovered product is as good as a new one, the paper presents an extended EOQ model.
这新的，改进的模型(芯片与微处理器控制)，很快在消费者中赢得了声誉和已被证明是可靠和值得信赖的设备。
This new, improved models (with microprocessor control of Microchip's), which quickly gained reputation among consumers and have proven to be reliable equipment.
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