Instead of building physical models to scale, or using mathematical models, software designers typically "model" by writing high level code.
与建造物理模型或者使用数学模型不同的是，软件设计者靠编写高层的代码来建立“模型”。
Methods of building linear programming mathematical model for feed compounding and main procedure of realizing improveds simplex algorithm with computer are presented in this paper.
本文首先阐述了如何建立饲料配方的线性规划数学模型，以及用计算机实现改进单纯形算法的主要步骤。
The paper presents an effective method for building the fuzzy mathematical model in complex systems. The concepts of the standard fuzzy partition and possibility measure are used.
本文采用标准模糊划分及可能性测度的概念，论述了对复杂系统建立模糊数学模型的一种有效方法。
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