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| band compensation | |||
| frequency compensation | |||
| 频率 补 偿: 8 phrases in 8 subjects |
| Astronautics | 1 |
| Automobiles | 1 |
| Aviation | 1 |
| Electronics | 1 |
| Shipbuilding | 1 |
| Space | 1 |
| Technology | 1 |
| Telecommunications | 1 |
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