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space observations; space-based observations | |||
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space-based surveillance |
космические наблюдения: 128 phrases in 12 subjects |
American usage, not spelling | 1 |
Astronautics | 54 |
Astronomy | 1 |
Ecology | 4 |
General | 5 |
Makarov | 3 |
Meteorology | 3 |
Military | 34 |
Nanotechnology | 1 |
Radiolocation | 1 |
Technology | 20 |
United Nations | 1 |