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astron | |||
parsec parallax second; parsec | |||
parallax second (天文距离单位,视差为 1 秒的距离,相当于 3. 259光年); parsec parallax second (天体距离单位,视差为 1 秒的距离,相当于 3. 259光年); parsec (见 parsec) | |||
parallax second | |||
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parsec | |||
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parsec | |||
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parsec | |||
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parsec | |||
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parallax second | |||
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parallax second |
秒差距 : 17 phrases in 7 subjects |
Astronomy | 1 |
Aviation | 1 |
Earth sciences | 1 |
General | 2 |
Geophysics | 2 |
Space | 5 |
Technology | 5 |