space to ground communication space-to-ground communication
Related Translations:
地面: 1.(地的表面) the earth's surface; ground 短语和例子低于地面 beneath ground level2.[建筑] (建筑内铺筑的一层东西) ground; floor 短语和例子水磨石地面 terrazzo floor3.(地区) region; area; territory 短语和例子这一带属辽宁地面。 this region is w
