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本文用偏相干分析法识别了NJD131汽车的噪声源.识别结果,得出了发动机油底壳和气缸体的振动辐射噪声是NJD131汽车主要噪声源的结论.
In this paper, the noise source of NJD131 automobile is identified by the method of partial coherence analysis.It is concluded that the vibration radiation noise of engine oil pan and cylinder block is the main noise source of NJD131 vehicle.