Main depicted mathematical modul of national information infrastructure and class base management system of multidimensional information.

主要提出描述国家信息基础结构的数学模型和多维信息的类库管理方法。

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In this paper, the relation between modul and modul in programming is set forth by using the concept and theory of mathematical set and mapping.

本文用数学集合与映射的概念和理论阐述了程序设计中模块与模块之间的关系；

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The simulation is developed by using cross flow mathematical model and solution-diffusion model for natural gas separation process in spiral-wound membrane modul.

利用错流流动模型及膜渗透的溶解-扩散机理，对螺旋卷式膜组件中天然气的分离过程进行了模拟计算。

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