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| libration point (天体运动方程或航天器运动方程的一种特解的表示) | |||
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平动点 : 24 phrases in 7 subjects |
| Automobiles | 1 |
| Aviation | 3 |
| Business | 2 |
| Economy | 2 |
| Socialism | 1 |
| Space | 2 |
| Technology | 13 |
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