Substitutable goods, the greater the higher the degree of substitution, demand more sensitive to price changes;

可替代商品越多，替代程度越高，需求对价格的变动就越敏感；

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In order to gain maximum expected profit, the retailers ordering policy for substitutable and perishable commodities with stochastic demand is discussed.

以获得最大期望利润为目标，讨论了随机需求环境下两种双向替代易逝品的零售商订货策略。

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