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| radio frequency sub system | |||
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| radio-frequency system | |||
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射频 系统 : 30 phrases in 8 subjects |
| Air defense | 1 |
| Aviation | 5 |
| Earth sciences | 2 |
| Electronics | 14 |
| Information technology | 1 |
| Oil / petroleum | 2 |
| Space | 2 |
| Technology | 3 |
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