在介绍描述产品信息的扩展赋权有向图之后，研究了产品数据模型在设计与制造过程不同阶段的变化。

After the extended directed graph with weightings for describing product information is introduced, the changes of product data model during different stages of design and manufacturing are studied.

youdao

在介绍描述产品信息的扩展赋权有向图之后，研究了产品数据模型在设计与制造过程不同阶段的变化。

After the extended directed graph with weightings for describing product information is introduced, the changes of product data model during different stages of design and manufacturing are studied.

youdao