In this paper, I study the characteristics and modeling process of qualitative simulation, propose the conception of qualitative compositional modeling and realize the corresponding algorithms.
在对定性仿真理论和定性建模过程研究的基础上，本文提出定性组合建模的思想，实现了相关的建模和仿真算法。
Qualitative study mainly includes mathematical modeling, computer simulation and experimental modeling.
定量方向主要包括数学模型、计算机模拟技术和实验模拟等；
Overseas, devices disabled mechanism is already researched from qualitative analysis to quantitative modeling and computer-aided simulation.
在国外，失效机理的研究已从定性分析转向定量建模和计算机模拟。
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