The method and theory of time-frequency analysis based on short-time Fourier Transformation are studied and the wave arrival points of easy component are determined by making software and using time-frequency analysis.是什么意思_The method and theory of time-frequency analysis based on short-time Fourier Transformation are studied and the wave arrival points of easy component are determined by making software and using time-frequency analysis.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句