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| polar orbiting satellite; polar-orbiting satellite | |||
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| polar-orbiting satellite | |||
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极轨卫星 : 38 phrases in 8 subjects |
| Air defense | 1 |
| Cartography | 2 |
| Earth sciences | 8 |
| Electronics | 2 |
| Nautical | 1 |
| Space | 19 |
| Technology | 4 |
| United States | 1 |
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