double fourier series
双Fourier级数
双边傅立叶变换
二重傅里叶级数
二重傅立叶级数
二重Fourier级数
double Fourier analysis
double Fourier decomposition
double Fourier integral
double Fourier transform
double Fourier transformation
double regression model
double series-wound chambers
Hardy-Hilbert’s double series inequality
series double-pole electro-pulse discharge
the double Fourier transfor
analytic solution in complex Fourier series
complex form of Fourier series
discrete Fourier series
exponential Fourier series