经济采购批量，也称最佳进货批量，它是指在一定时期内进货总量不变的条件下，使采购费用和储存费用总和最小的采购批量。
研究了变质物品在考虑资金时间价值并且采购费允许滞后支付时的最优经济订货批量问题。
The paper studies the optimal economic order quantity problem of deteriorating items taking account of capital time-value and possible delay in payment of procurement cost.
利用成本优化、概率论等理论和方法，制定经济合理的采购批量。
The economic order quantity will be decided by applying the theory and method of optimizing cost and probability.
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