提出了变粒度全因素工程网络图的概念，探讨了工程延误的类型和识别工程延误索赔机会发现的方法；

The concept of all-factors engineering network is raised. The types of engineering delay, and the ways to recognize the claim chance delay are discussed.

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介绍了道路权重的各种类型、路阻函数模型、交叉口延误模型和路网可靠度的研究成果。

Then it introduces the research fruit of road weight types, road impedance function model, intersection delay model, and network reliability.

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