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| amplitude modulated carrier | |||
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调幅载波 : 32 phrases in 9 subjects |
| Air defense | 4 |
| Business | 1 |
| Electronics | 14 |
| Geophysics | 2 |
| Information technology | 2 |
| Multimedia | 1 |
| Space | 3 |
| Technology | 3 |
| Telecommunications | 2 |
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