Which means, whenever the stock value reaches reorder level, we have to create purchase order, and the purchased order should be authorized.

这意味着，每当股市值达到订货点水平，我们必须创建采购订单，而购令应该被授权。

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Through the discussion of special cases, we prove that both substitution and reorder can bring profits and reduce the general stock level.

通过对几种特殊情况的讨论和比较，证明了替代和再订货可以提高利润并且可减少库存总量。

youdao

Through the discussion of special cases, we prove that both substitution and reorder can bring profits and reduce the general stock level.

通过对几种特殊情况的讨论和比较，证明了替代和再订货可以提高利润并且可减少库存总量。

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