| |||
satellite-based observing system | |||
satellite observation system; satellite observatories | |||
satellite-missile observation system |
卫星观测系统 : 14 phrases in 8 subjects |
Earth sciences | 1 |
Electronics | 3 |
General | 2 |
Space | 4 |
Technology | 1 |
United Kingdom | 1 |
United Nations | 1 |
United States | 1 |