In chapter 5, the sub-system for the assembly tolerance modeling is introduced. At first, I present system structure, implementing flow, and function modules.
设计了装配公差建模与累积仿真子系统的体系结构、功能模块、运行流程，并基于CAA实现了子系统的开发。
参考来源 - 基于特征变动的装配公差建模研究·2,447,543篇论文数据，部分数据来源于NoteExpress
公差优化设计是在机械产品设计和制造过程中的一项重要内容，而在计算机应用中， 建模也是一个重要的步骤。
Optimum tolerance design is one of important steps in the process of machine design and manufacture and in the application of computer, and model-building is an important step.
从产品性能公差设计的角度探讨分形公差理论的建模、分析、设计等有关方法，着重研究分形维数的计算理论和工程方法。
Some methods about fractal based tolerancing are discussed in this paper. The engineering calculation on profile fractal dimension is presented in detail.
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