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| 基本频率 | |||
| 基础频率 | |||
| 基波频率基频 | |||
| 基波频率 | |||
| 基本频率 | |||
| 主频 | |||
| 基音频率; 基谐，本，波频率; 基谐波频率 | |||
| 基频; 固有频率 | |||
| English thesaurus | |||
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| fund. freq. | |||
| fundamental frequency: 26 phrases in 8 subjects |
| Electric machinery | 6 |
| Electronics | 2 |
| Mathematics | 1 |
| Nautical | 1 |
| Oil / petroleum | 2 |
| Space | 3 |
| Statistics | 1 |
| Technology | 10 |