编制程序绘制直达波和折射波时距曲线ray

代码说明：

  编制程序绘制直达波和折射波时距曲线，增加对地震勘探中的波的理解(Programming drawn from the direct wave and refracted wave curve, increase the understanding of wave seismic exploration)

文件列表：

ray (2).zip,24937,2012-03-28
Ray.zip,426,2012-03-28
sy23.m,501,2012-03-21