Results The power spectra of pulse signals were obtained,the power-spectral characteristics were analyzed and compared. 結果獲得了脈搏信號的功率譜，并對功率譜特征進(jìn)行了分析和比較。
This effect explains why the second peak in the power spectrum is lower than the first. 這個(gè)效應解釋了為何功率譜上的第二峰低于第一峰的現象。
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