The product model and the evolution of product and process are set up for product lifecycle. And the assembly topology tree and part topology tree are constructed.
提出了面向产品生命周期的产品模型、产品结构模型的装配拓扑树和零件拓扑树以及产品模型与产品开发过程的进化过程。
Finally, the entire modeling process was illustrated by instance from the product requirement structural sub-tree to overall product lifecycle structural model.
最后，通过实例阐明了从产品需求结构子树到整个产品全生命周期结构模型的构建过程。
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