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| carrier wave transmission | |||
| carrier transmission | |||
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载波传输 : 21 phrases in 8 subjects |
| Air defense | 2 |
| Computer networks | 1 |
| Electronics | 1 |
| Information technology | 5 |
| Shipbuilding | 1 |
| Space | 2 |
| Technology | 5 |
| Telecommunications | 4 |
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