根据库存变化周期和经济订货批量，采用定期与定量相结合的订货方法，实现最低库存成本。
The lowest stock cost is achieved by adoption of combination order of regular and quantitative ways based on the stock cycle and economical order quantity.
如何根据生产需要对材料的订货批量、订货批次及订货周期进行决策，将影响到企业的产品成本和经济效益。
So how to make decision of the order batch, order quantity, order period of the materials according to the production need direct influences on the economic benefit.
建立了供需双方多周期的最优订货批量模型，讨论了随机需求下两级供应链中供应双方多周期的生产和订货批量问题。
A model of the multi-period order quantity of two parties in the supply chain(SC) was established, discussing the multi-period order quantity in the two-level SC.
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