This paper gives the further analysis of node voltage equations and its matrix form, and the methods to write out node equations with strong operation.
引入了结式的矩阵形表示，提出了矩阵形结式的移位变换概念，并利用其得到了结式计算的一个简便方法。
The modified scalar potential is used to reduce the order of the coupled equations in the comparison with the vector potential under the same node number.
计算量采用修正标量位，这样在同样的节点数下相对于矢量位它可以减少联立方程的阶数。
The concept of extended boundary node was presented. By using finite difference method, the solution of the gained difference equations was given and simulated by computer.
由此提出了扩展边界节点的概念，并使用有限差分法，对所得到的差分方程组进行了计算机求解及模拟。
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