二维FDTD仿真soft source入射到有限区域边界后的传播，区域中间放置了一块pec，并且设定了ABC边界条件，可以自动生成关于Ez，Hx和Hy的.avi文件，播放脉冲动态传输。-Dimensional FDTD simulation soft source is incident to spread limited area boundary after placing a piece of the middle region pec, and set the ABC boundary conditions, can automatically generate .avi files on Ez, Hx and Hy, and play dynamic pulse transmission.