大地坐标和空间直角坐标间的转换程序。界面设计的很简洁大方，最重要的是精度非常的高！-Earth and space coordinates between rectangular coordinates conversion process. Interface design is very simple and generous, the most important thing is the very high accuracy!

测绘专业中,空间直角坐标与大地坐标互相转换的VC源代码,-In the specialty of surveying and mapping, the space rectangular coordinate and geodetic coordinate transformation each other VC source code,