The influence of return rates and time penalty factors on optimal periods of returns, optimal order quantities and maximum profit are evaluated through using a numerical instance.

并采用数值实例分析了退货率和时间惩罚因子对最优允许退货时间长度、最佳订货量以及最大产品收益的影响。

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If you want consistent high conception rates, shorter calving periods and high milk production, you must provide the necessary nutrients in adequate quantities!

如果你想始终获得高受胎率、短产犊期和高产奶量，你必须提供充足数量的必要营养！

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