能够实现各种坐标的转换：投影面归算、椭球体变换、七参数计算、地图投影及换带变换,大型基建施工工程精度保障。 操作方便：支持与Excel表格的双向粘帖复制。-To achieve a variety of coordinate transformation: projection plane owned by operator, ellipsoid transform, seven-parameter calculation, map projection and for zone chang