Based on the production practice, the mathematical model of the optimum stock of raw materials in paper making enterprises and its application are introduced with copper plate paper as an example.
根据生产实践经验，以铜版纸生产为例，介绍了造纸企业生产原料最佳库存量的数学模型及其应用。
This paper researches the planning and decision making problem of petroleum mechanical multiproduct enterprises, and establishes the corresponding system model by using systematic dynamic principle.
本文研究石油机械企业多产品生产的规划决策问题，运用系统动力学的原理建立了相应的系统模型。
Based on summary and analysis of the actual conditions of post enterprises, this paper proposes two models of making time limit standard for mail transmission.
本文从总结和分析邮政企业的实际情况出发，探讨了制定邮件传递时限标准的两种模式。
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