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| reference ellipsoid; reference spheroid (用来近似地球几何形状的参考球体) | |||
| reference ellipsoid (体); reference spheroid (体) | |||
| 参 考椭球: 12 phrases in 4 subjects |
| Aviation | 2 |
| Space | 5 |
| Technology | 4 |
| United Nations | 1 |
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