关于电磁波传播的1D FDTD程序，共5个程序，包括自由场，吸收边界和辐射边界等内容，可以作为FDTD初学者的良好参考。-1D FDTD electromagnetic wave propagation on the program, a total of five programs, including free field, absorbing radiation boundaries, boundaries and content, can serve as a good referenc