说明：  矩阵加法，数学术语，定义为在数学里，矩阵加法一般是指两个矩阵把其相对应元素加在一起的运算。 矩阵怎么进行加减，矩阵是大学中必然要学习的一部分内容，矩阵的加减是学习矩阵的过程中最简单的一部分。
(Matrix addition, a mathematical term defined as in mathematics, the addition of a matrix generally refers to the calculation of the addition of the corresponding elements by two matrices. How to add and subtract the matrix is a part of the university that must be studied. The addition and subtraction of the matrix is the simplest part of the learning matrix.)