Earth-centered earth-fixed coordinate system

• 地心坐标系

Earth-centered earth-fixed coordinate system的用法和样例：

例句

1. Abstract in the geocentric coordinate system defined in the ellipsoid Earth on the basis of geography gives the mathematical definition of lunwen114space.
   在地心坐标系中定义地球椭球面的基础上，给出了地理空间的数学定义。