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| aberration frequency | |||
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畸变频率 : 12 phrases in 8 subjects |
| Air defense | 2 |
| Electric machinery | 1 |
| Electronics | 3 |
| General | 1 |
| Information technology | 1 |
| Oil / petroleum | 2 |
| Shipbuilding | 1 |
| Telecommunications | 1 |
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