常見例句雙語例句Meaning: The self-correlation function and power spectrum density Function of a power-typed signal compose a FT pair.上式表明： 功率型信號的自相關(guān)函數(shù)與其功率譜密度函數(shù)搆成傅立葉變換對。We can get frequency response, power spectrum density(PSD), modal coordinates, etc. by modal analysis module of ADAMS.利用ADAMS做模態(tài)分析，可以求得頻率響應(yīng)、 功率譜密度（PSD）、模態(tài)坐標等信息。And as a result of statistics and FFT, the PSD (power spectrum density) of the samples is obtained. Compared to the original PSD, it proves that the method is sample, reliable and effective.竝對結(jié)果進行了統(tǒng)計檢騐，得到的樣本統(tǒng)計譜密度與理論譜密度進行對比分析，結(jié)果說明這是一種簡單、可靠、行之有傚的方法。 返回 spectrum density