大地测量学原理坐标转换程序，能实现大地坐标到平面的互相转换-The geodetic coordinate conversion program principle, can realize the earth coordinate to plane conversion to each other

大地坐标的纬度和经度，许多大地坐标的纬度和经度的批处理非常方便。-Geodetic coordinates to latitude and longitude, very convenient to many geodetic coordinates to latitude and longitude of batch.

同一基准下由大地坐标系转成空间直角坐标系-Under the same benchmark by geodetic coordinate system into space rectangular coordinate system