Comprehensive Chinese-English Dictionary

测地卫星 [cèdìwèixīng]

1. 1. noun A man-made satellite that collects data about the earth's shape, size, and gravity.

   摄影师正在屋子里测光。

   The photographer is measuring the brightness of his object in the room.

   我国已经发射了好几颗测地卫星。