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紫 外 探测器 : 18 phrases in 9 subjects |
| Air defense | 1 |
| Automobiles | 2 |
| Aviation | 2 |
| Earth sciences | 1 |
| Electronics | 2 |
| Oil / petroleum | 1 |
| Space | 6 |
| Technology | 2 |
| United States | 1 |
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