采用有限差分方法，对波动方程求数值解。
We use finite difference method to solve electromagnetic wave equation.
对于导热问题的求解常用两种方法：有限差分法和有限元法。
There are two methods for the key of heat exchange:finite element and finite difference.
该模型的数学形式是一个非线性二阶常微分方程，利用有限差分方法进行求解。
The mathematical expression of this model is a second order non linear ordinary difference equation.
该模型的数学形式是一个非线性二阶常微分方程，利用有限差分方法进行求解。
The mathematical expression of this model is a second order non linear ordinary difference equation.
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