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71. | space navigation |
| 宇宙导航 |
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72. | cosmic radio source |
| 宇宙射电源 |
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73. | cosmical plasma |
| 宇宙等离子体 |
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74. | cosmic electron |
| 宇宙电子 |
|
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75. | cosmological term |
| 宇宙项 |
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76. | space communication line |
| 宇宙通信线路 |
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77. | Cosmos satellites |
| “宇宙”人造卫星 |
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78. | cosmic biophysics |
| 宇宙生物物理学 |
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79. | astro navigation |
| 宇宙航行 |
|
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80. | cosmic elevator |
| 宇宙电梯 |
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