This paper describes a product data model as a product structural tree that is composed of data objects and relation objects, and expresses the product structural tree as a matrix.
将产品数据模型表示为包含数据对象和关系对象的树状结构，并用矩阵的形式加以描述。
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。
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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