以承包的国际工程项目为研究对象，建立承包风险评估层次分析模型。
The projects contracted in international market are the research objects in this article.
通过对车辆事故的分析，建立了影响因素的层次结构模型。
Through analyzing vehicle accident a novel model of hierarchy has built in this paper.
通过对车辆事故的分析，建立了影响因素的层次结构模型。
Through analyzing vehicle accident a novel model of hierarchy has built in this paper.
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