This paper presents a new algorithm for very useful symmetry fuzzy optimum model in optimum design of agricultural engineering equipment.

本文针对农业工程装备模糊优化设计中常见的对称模糊优化问题，提出了一种新的求解算法。

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Then, the method of building the assembly model, recognizing mating constraint type based engineering knowledge, the algorithm of inferring relative freedom of mating feature are given.

并给出装配模型的建立过程及基于工程知识的装配配合约束类型识别方法、配合特征相对自由度推理算法。

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Aimed at the mesh model used for engineering analysis, a coloration algorithm based on the topologic graph is presented.

针对工程分析用的网格模型，以图论中的拓扑图为基础提出了一种空间网格面的染色算法。

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