double power series[数] 二重幂级数

Double Glass Series双层玻璃杯系列

double geometric series双等比级数

double fourier series regression双傅利叶函数回归

double stratification series model两层系列模型

double-series connection双串联

double fourier series二重傅里叶级数;二重傅立叶级数

generalized double fourier series广义傅里叶级数

double electrode series双极串联