These equations are written more concisely as a single columnmatrix equation. 这些方程以单列矩阵方程表示会更简单。
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。