A method of preferences for the bodywork of passenger car which can be controlled by parameter, has been put forward based on the conception of cell of biology, in which standard modules with the same topological structure derive the various functional modules, thereby completing the parametric design of bus body frame. The approach has been elaborated with PRO/E software. It affords a resolution to the modularization and cooperation of the passenger car bodywork design and presents an improvement in the design of 3D passenger car model.%针对客车车身骨架三维设计在参数化方面无突破性进展，基于生物学细胞概念，提出一种客车车身参数化方法，即由拓扑结构相同的标准模块衍生各种不同的功能模块，从而完成客车车身骨架的参数化设计，并结合PRO／E软件进行阐述，为客车车身之平台化、模块化、协同设计提供一种解决思路．
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