这不仅对人类进化和人体特征的理论研究有著重要的意义﹐而且对法医等医学部门都有实际的用处。
This is not only to human evolution and human characteristics of theoretical research has important significance, but also for forensic and other medical departments have practical usefulness.
该方法首先利用小波变换和主成分分析对故障信号进行预处理，然后用处理后的故障特征数据对小波神经网络进行训练和测试。
The method uses wavelet transform and principle component analysis to preprocess fault signal, afterward training and testing wavelet neural network with the preprocessed fault characteristic data.
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