烟叶变化 leaf change

叶间期变化 plastochronic changes

傅里叶变化红外 Fourier transform infrared ; FTIR

离散傅立叶变化 Discrete Fourier Transform ; DFT

和离散傅立叶变化 DFT ; discrete fourier Transform

傅里叶变化红外光谱 Fourier transform infrared imagin

傅立叶变化红外光谱仪 FTIR Spectrometer

傅立叶变换对角化性质 Fourier transform diagonalization property

叶型变化 change of leaf form

短时傅里叶变化 STFT