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电离层观测
| 纳卫星
| 编队
| 电离层观测 | |
| nautic. tech. | observation |
| 纳卫星 | |
| space | nanosatellite; Nanosputnik; nanosatellite |
| 编队 | |
| gen. | array; formate |
| sport. | formation |
| |||
| observation | |||
| 电离层观测: 6 phrases in 4 subjects |
| Earth sciences | 1 |
| Space | 2 |
| Technology | 2 |
| United States | 1 |
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