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  希尔伯特变换和小波包结合的齿轮箱故障诊断方法，里面有具体的介绍小波包的分层方法，非常详细，可以下下来看看(Hilbert transform and wavelet packet of gearbox fault diagnosis method, there is detailed introduction inside the layered method of wavelet packet is very detailed, can down and have a look )

文件列表：

基于希尔伯特变换和小波包节点能量法的齿轮箱故障诊断研究.pdf,374821,2012-11-20