【摘要】 本文分析了相干分析方法在声源诊断中的弱点，提出了分布声源偏相于诊断的理论，并建立了与其相应的数学模型，还探讨了分布声源相干诊断中近场测点的布置方法，给出了应用实例。更多还原

【Abstract】 The partial coherence t.heory of distribution noise source diagnosis is presented and its mathematic model is established based on the weak point analysis of coherence analysis in noise source identification.The method of near field measuring point determined is probed and applied living example is given.更多还原