中文说明：taflove书上的三维FDTD程序，计算一维波传播，二维波传播，三维谐振腔问题。taflove书上的三维FDTD程序，计算一维波传播，二维波传播，三维谐振腔问题。
English Description：
Taflove book on the three-dimensional FDTD program to calculate one-dimensional wave propagation, two-dimensional wave propagation, three-dimensional cavity problem. Taflove book on the three-dimensional FDTD program to calculate one-dimensional wave propagation, two-dimensional wave propagation, three-dimensional cavity problem.