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无线电星 : 65 phrases in 14 subjects |
| Air defense | 1 |
| Astronautics | 1 |
| Automobiles | 2 |
| Aviation | 5 |
| Earth sciences | 2 |
| Electronics | 5 |
| Geophysics | 1 |
| Information technology | 1 |
| Multimedia | 1 |
| Shipbuilding | 1 |
| Space | 34 |
| Technology | 7 |
| Telecommunications | 1 |
| United States | 3 |
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