短語詞組短語inverse fast Fourier transform 快速傅立葉逆變換;快速反傅立葉變換;反傅立葉變換the inverse of fourier transform 傅里葉變換的反演IFFT Inverse Fast Fourier Transform 快速傅立葉逆變換IDFT Inverse Discrete Fourier Transform 離散傅立葉反變換Scaled Inverse Fast Fourier Transform 變尺度逆傅立葉變換inverse discrete fourier transform idft 逆離散傅立葉變換two -dimensional inverse discrete fourier transform 二維離散傅里葉反變換dimensional inverse Fourier transform 二維傅里葉反變換operating inverse fourier transform 傅立葉反變換 返回 inverse fourier transform