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辐射影 响 : 17 phrases in 9 subjects |
| Air defense | 1 |
| Aviation | 1 |
| Earth sciences | 1 |
| Ecology | 2 |
| Electronics | 7 |
| Name of organization | 1 |
| Space | 1 |
| Technology | 2 |
| United Nations | 1 |
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