algebraic addition meaning in English

代数和
代数加法
代数相加

Potentials may be summed by the law of algebraic addition .
势可用代数和的定律来相加。
First , single led is analysed and disposed approximately to build the mathmatical model , light energy of one point on screen is calculated by algebraic addition , then the distribution of light energy on the whole area of screen is deduced
首先对单个发光二极管进行分析，对其做近似处理，建立数学模型，用代数叠加的方法来推导光幕面内某一点的光能量。