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| harmonic frequency | |||
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| harmonic frequencies | |||
| гармоническая частота: 19 phrases in 11 subjects |
| Acoustics | 1 |
| Astronautics | 1 |
| Automobiles | 1 |
| Aviation | 1 |
| Construction | 2 |
| Electrical engineering | 1 |
| Makarov | 4 |
| Mass media | 4 |
| Seismology | 2 |
| Technology | 1 |
| Telecommunications | 1 |