This article studies the optimal policy of production-inventory model in which timecycling is limited and cost parameter varies in stepped variation, and the definite way of cost parameter.
本文研究时间周期有限,费用参数呈阶梯变化的生产-库存模型的最佳策略及参数的确定途径。
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But men who spend a lot of time biking should make sure their bike fits them properly, wear padded cycling pants, and stand up frequently while pedaling.