The predictive models of fuzzy graph, nonlinear regression and with grey theory are set up from different aspects by analyzing the features of road traffic accidents.

通过分析道路交通事故发生的特点，从不同的角度，建立了模糊图模型、非线性回归模型及基于灰色理论的灰色预测模型。

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In this paper, the cost estimate system of constructional engineering has been studied based on the theory of Fuzzy Mathematics and Grey system, and a practical computer software has been worked out.

本文利用模糊数学和灰色系统理论，对建筑工程造价估测系统进行了研究，并在此基础上，研制成实用软件。

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Safety management: Establishes the dynamic comprehensive analytical method on major hazard and safety management of the major hazard by applying the grey system theory and fuzzy math theory.

安全管理水平：运用模糊数学理论和灰色系统理论，建立了重大危险源安全管理水平动态综合分析法。

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