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| частотная характеристика | |||
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频响 : 57 phrases in 9 subjects |
| Aerohydrodynamics | 1 |
| Aviation | 7 |
| Electronics | 14 |
| General | 6 |
| Metrology | 1 |
| Oil processing plants | 2 |
| Radio | 1 |
| Technology | 24 |
| Television | 1 |
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