multi-frequency of buses 多班次的发车
frequency of buses
巴士班次
以上为机器翻译结果，长、整句建议使用 人工翻译 。
By using the method of wavelet packet transform on the big differential currents, extracting high-frequency coefficients of wavelet packet, to decide faults within or outside the buses.
该方法应用小波包对大差电流进行变换，提取高频小波包系数来判定区内或区外故障。
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