检查所有车辆的底盘。
详细介绍了试验车辆的底盘和车身的设计要求、材料和结构组成。
The design requirements, materials and structure of the vehicle's chassis and body were expounded.
合作的内容之一是车辆的底盘设计，比如保时捷凯宴、大众途锐和奥迪A7所使用的底盘就是二者合作的结果；
Those involve, for example, the chassis design, or platform, on which the Porsche Cayenne sport-utility vehicle, the VW Touareg and the Audi Q7 are based;
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