From this point of view, we can concisely and intuitively introduce the multiplication principles of elementary matrix and block matrix.

用变量的线性替换解释矩阵乘法，由此可以简洁而且直观地导出初等矩阵和分块矩阵的乘法原理。

You can say that the proof USES nothing beyond elementary matrix theory, repeated use of the triangle inequality, and the pigeonhole principle.

你可以简要地说其实证明就是初等矩阵理论，三角不等式和鸽笼原理的运用。

This algorithm diagonalizes the MIMO channel matrix based on the statistics of the source signals by using the elementary matrix transformation in mathematics.

该算法基于通信源信号的统计特性，利用数学上通过矩阵初等变换实现矩阵对角化的原理对MIMO信道矩阵实现了对角化。

Based on elementary circuit theorems, the matrix equations for calculating layer currents are set up and some formulas are deduced.

根据电路基本定律，列出了计算各层定流的矩阵方程并推导了有关的计算公式。

This paper starts from the physical processes of cascade speed control system and derives several groups of elementary electromagnetic equation, dynamic block diagrams, and matrix equations.

本文从串级调速控制系统的物理过程出发，推求出几组基本的电磁方程、动态结构图及矩阵方程。