介绍了时域有限差分法的基本原 理, 推导了二维棋份算法的。表达式, 对吸收边界条件工肠山网加、数值毯定性条件等 进行了说明, 并阐述了基于人们由软件编程的基本方法-Introduced the FDTD method the basic principles were derived algorithm for two-dimensional chess. Expression, work on absorbing boundary conditions net increase of