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| modulated/unmodulated | |||
| 调制- 未 调制: 23 phrases in 10 subjects |
| Air defense | 10 |
| Automobiles | 1 |
| Aviation | 1 |
| Construction | 1 |
| Electronics | 1 |
| General | 1 |
| Oil / petroleum | 1 |
| Technology | 5 |
| Telecommunications | 1 |
| Television | 1 |
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