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| слуховой порог | |||
| порог слышимости | |||
| порог слухового ощущения | |||
| audibility threshold: 8 phrases in 7 subjects |
| Acoustics | 1 |
| Astronautics | 1 |
| Makarov | 1 |
| Mass media | 1 |
| Medical | 2 |
| Natural resourses and wildlife conservation | 1 |
| Technology | 1 |
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