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| 谐序; 谐波级数 | |||
| 谐级数 | |||
| 调和极数 | |||
| 谐〔调和〕级数; 谐音系列 | |||
| 调和系数 | |||
| 谐波系 | |||
| 调和级数 | |||
| 谐波级数; 谐波系 (列); 调和数列 | |||
| 谐波系列 | |||
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harmonic series : 6 phrases in 4 subjects |
| Business | 1 |
| Cultural studies | 1 |
| Otorhinolaryngology | 1 |
| Technology | 3 |
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