cad作图过程中的剖面图制作是很麻烦的，要花大量的时间，按坐标文件绘制剖面图是比较好的一种方式，此程序提供这种功能-cad mapping profile in the process of production is very troublesome, and spend a lot of time, according to documents drawn profile coordinates is a better way, this program provides this func