# double series

• 二重级数

## double series的用法和样例：

### 例句

1. As applications, we build its equivalent form and the analogue general double series inequalities.
作为应用,建立它的等价形式及对应二重级数的最佳推广不等式。
2. In this paper,a solution in the form of Fourer-Bessel double series with supplementary terms is proposed to analyse free vibration of a sector plate.
本文从富氏级数的理论出发，对弹性地基扇形板的弯曲问题，提出了一种应用范围比较广的、便于计算的解析形式的解法。
3. In this paper a solution in the form of Fourier-Bessel double series with suplementary terins is proposed to analyse bending problems or thin elastic sector plate resting on an elastic foundation.
本文从富氏级数的理论出发，对弹性地基扇形板的弯曲问题，提出了一种应用范围比较广的、便于计算的解析形式的解法。
4. This dissertation adopts double series system of four-quadrant converter at the DC source side of test system, and proposes predicted current control scheme based on phase-shifted SVPWM.
本文在系统的直流电源侧采用了两重化串联四象限变流器，提出了基于移相式SVPWM的预测电流控制方案。
5. He is working double tides to finish his essay.
他日夜苦干，赶写他的文章。
6. I do not realize it is a double feature.
我原先不知道这是双片连映。