| |||
| 数据中继卫星系统 | |||
|
Data Relay Satellite System : 13 phrases in 6 subjects |
| Aviation | 3 |
| Cartography | 1 |
| Earth sciences | 1 |
| Information technology | 1 |
| Space | 4 |
| United States | 3 |
| |||
| 数据中继卫星系统 | |||
|
Data Relay Satellite System : 13 phrases in 6 subjects |
| Aviation | 3 |
| Cartography | 1 |
| Earth sciences | 1 |
| Information technology | 1 |
| Space | 4 |
| United States | 3 |