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发射机/接收机 : 40 phrases in 12 subjects |
| Air defense | 3 |
| Automobiles | 2 |
| Aviation | 4 |
| Earth sciences | 1 |
| Electronics | 13 |
| General | 1 |
| Geophysics | 1 |
| Radio | 2 |
| Space | 8 |
| Technology | 3 |
| United Nations | 1 |
| United States | 1 |
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