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стандарт уровня шума | |||
эталон шумов | |||
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нормы на шумы |
noise standard: 16 phrases in 8 subjects |
Antennas and waveguides | 1 |
Aviation | 4 |
Ecology | 1 |
Electronics | 1 |
Mass media | 1 |
Natural resourses and wildlife conservation | 1 |
Programming | 2 |
Telecommunications | 5 |