文章摘要 关键词 声学； 汽车车身； 隔声； 声压法； 声强法[gap=980]Key words acoustics ; vehicle body ; sound insulation ; sound pressure method ; sound intensity method.
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Sound power of district jet, liner increaser jet and round increaser jet is experimental measured using sound intensity method. The result shows that there is little difference among the jet injection noise sound power of three jets.
通过声强法分别对直口喷管、直线渐开喷管和圆形喷管的喷射噪声的声功率进行了测量,结果表明三种喷管喷射噪声的声功率大小差别不大,但指向性有很大的差别,圆形渐开喷管喷射噪声更易于发散辐射。
参考来源 - 内燃机排气消声器设计技术研究·2,447,543篇论文数据，部分数据来源于NoteExpress
用声强法成功地识别出燃烧噪声的辐射途径。
Through Sound density theory, the burning noise's radiation progress approach was successfully identified.
用声强法对车外噪声的主要声源进行了鉴别。
With sound intensity method, major sources of the exterior vehicle noise are identified.
该文介绍了声强法的原理和通风机噪声的声强测量方法，有一定实际应用价值。
This paper introduces the principles of sound intensity method and the application of the method to measure the noise of the fan.
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