中文摘要：

传统汽车款式设计中存在不确定性，而云模型是一种可以实现定性与定量之间不确定性相互转换的有效工具．基于云模型表示汽车款式知识，可以有效地实现在汽车款式设计过程中定性与定量转换之间的不确定性。运用云模型的概念爬升反映汽车款式设计中小粒度概念爬升为大粒度概念的过程，通过三层模型体现汽车款式知识在不同层次上的映射，最后通过一个实例表现云模型表示的汽车款式概念爬升过程。

英文摘要：

Cloud model is an effective tool in micertain transforming between qualitative concepts and quantitative expressions. The uncertainty of knowledge representation in car＇s style is based on cloud model, which is an effective way to transform qualitative concepts into quantitative expressions during the designing of car. This paper uses concept -trec to express the small coucept climing - up to big concept in car＇s style and design three layers model mapping knowledge representation of car＇s style in different layers. At last, a case is given in the process of concept climing up in car＇ s style wlfich knowledge representation is based on cloud model.