为进一步进行变速箱噪声控制的研究提供了理论依据。
It provides theoretical basis for the further study of gearbox noise control.
控制变速箱噪声已成为越来越多汽车生产企业的重要研究方向。
How to control the noise of gear-box is an important research to many automobile enterprises.
该方法对变速箱的噪声源有一定的识别能力，具有很广阔的应用前景。
This method has the capacity to identify gearbox noise source, and has broad prospects for application.
该方法对变速箱的噪声源有一定的识别能力，具有很广阔的应用前景。
This method has the capacity to identify gearbox's noise source, and has broad prospects for application.
该方法对变速箱的噪声源有一定的识别能力，具有很广阔的应用前景。
This way is able to identify gearbox's noise source, and has great wide application foreground.
本文采用自功率谱、逆频谱方法对拖拉机变速箱异常噪声源进行了诊断，找出了产生异常噪声的根源。
With auto-power spectrum and cepstrum, this paper diagnoses the unusual noise source of the gear box, and finds an impaired gear of the box.
本数值基础，是按照标准化，在封闭空间内1米的距离仅仅针对变速箱纯噪声的排放进行测试的。
This value basis, as per the standardization, exclusively on the pure noise emission of the gearbox in an enclosed area measured with 1m distance.
本文应用声学仿真的方法对125-C型摩托车变速箱端盖进行结构优化设计，达到降低表面辐射噪声的目的。
In this paper, the acoustic simulation was applied to improve the noise performance of gearbox cover on the motorcycle of 125-C with the low vibro-acoustic structure design.
应用振动、噪声信号频谱分析和相干函数分析技术，从理论上说明变速箱故障诊断的依据。
The theory of coherence function and spectrum of vibration and noise signals is applied in gearbox noise analysis in the paper. The basis of fault diagnosis of gearbox is theoretically introduced.
应用振动、噪声信号频谱分析和相干函数分析技术，从理论上说明变速箱故障诊断的依据。
The theory of coherence function and spectrum of vibration and noise signals is applied in gearbox noise analysis in the paper. The basis of fault diagnosis of gearbox is theoretically introduced.
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