中文说明：均匀介质各向同性二维弹性波数值模拟，采用cerjan边界条件。有公式及参考文献。带有速度模型以及雷克子波函数，解压后直接运行就可以。
English Description：
The cerjan boundary condition is used to simulate the isotropic two-dimensional elastic wave in homogeneous media. There are formulas and references. With the velocity model and the ricket wavelet function, it can run directly after decompression.