Much remains to be done, then, but we anticipate that the same results will be generated by the HHT method to improve the resolution of the time and frequency domains. 而本篇文章則是利用時(shí)頻分析技術(shù)，以共振主頻隨時(shí)間之變化來(lái)探討局部地區土層之場(chǎng)址效應，尤其是強震與弱震間土壤共振主頻之差異。
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