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| 工作频率 | |||
| 运转频率 | |||
| 工作［运用］频率 | |||
| 运行频率; 操作频率 | |||
| 运用频率 | |||
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operating frequency : 11 phrases in 9 subjects |
| Air defense | 1 |
| Aviation | 1 |
| Electric machinery | 1 |
| Electronics | 1 |
| Geophysics | 1 |
| Information technology | 2 |
| Shipbuilding | 1 |
| Space | 2 |
| Technology | 1 |
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