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| synchronous orbit | |||
| synchronous satellite orbit | |||
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同步卫星 轨道 : 22 phrases in 8 subjects |
| Air defense | 1 |
| Aviation | 1 |
| Earth sciences | 4 |
| Electronics | 3 |
| Multimedia | 1 |
| Space | 9 |
| Telecommunications | 1 |
| United States | 2 |
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