有向图设计
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directed design flow graph 有向设计流程图
directed graph design
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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.
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。
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