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| 谐振波频率 | |||
| 振动频率 | |||
| 谐和频率 | |||
| 谐波频率 | |||
| 谐振频率 | |||
| 谐频谐波频率 | |||
| 谐频 | |||
| 谐和频率谐波频率 | |||
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harmonic frequency : 21 phrases in 12 subjects |
| Air defense | 1 |
| Automobiles | 1 |
| Earth sciences | 1 |
| Electric machinery | 1 |
| Electronics | 3 |
| General | 1 |
| Information technology | 1 |
| Mathematics | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 1 |
| Technology | 8 |
| Telecommunications | 1 |
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