Based on the above qualitative analysis, it constructs an inventory optimizing model for manufacturer and storing company respectively, fingers out an optional result of the cost decision variable.
在前面定性分析基础上，分别建立生产型企业和销售型企业有需求提前期的库存优化模型，得出成本决策变量的最优解。
In this thesis, the nature and state of raw coal cost is analyzed by means of the grey relevant analysis method. The raw coal cost is divided into fixed cost and variable cost.
本文采用灰色关联分析方法对原煤成本性态进行了分析，将原煤成本划分为固定成本和变动成本。
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