单位转换功能 弹出列表，点击变换单位值，点击取消消失。-Unit conversion function pop-up list, click on the transformation unit values, click Cancel disappear.

GPS火星坐标转换, GPS Mars coordinate transformation-GPS Mars coordinate transformation GPS Mars coordinate transformation GPS Mars coordinate transformation

地球与火星坐标转换demo：适合学习从地球坐标转换成火星坐标的算法应用.-Mars coordinate transformation demo：Suitable for studying coordinates earth into Mars coordinates algorithm.