中文摘要：

声强测试分析方法是一种有效的噪声源识别和声场分析方法。依据声强法的原理，对某型汽车的车外辐射噪声进行声强测试，并在此基础上对该车的主要噪声源进行识别和研究，为降低该型汽车的表面辐射噪声提供有效的参考依据。

英文摘要：

The sound intensity method is an effective method in noise source identification and acoustic field analysis. According to the principle of sound intensity measurement, the major sources of the exterior radiation noise of the vehicle are surveyed, and the noise source identification in vehicle is presented. The results show that the research could provide the reliable basis for the engineering practice to reduce vehicle noise level.