We use finitedifference method to solve electromagnetic wave equation.
采用有限差分方法，对波动方程求数值解。
2
At the same time, based on the result, it is concluded that the upwind finitedifference scheme for solving the one dimensional heat transfer equation for SG is stable.
同时，根据这个结果分析得到了求解蒸汽发生器一维传热方程的逆风有限差分格式是稳定的。
3
It is briefly introduced that three-dimensional finitedifference numerical equation is built according to Darcy's law and water equilibrium principle.