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pure tones | |||
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clean tone | |||
pure color | |||
pure tone (одной частоты, не содержащий гармоник); pure audio-frequency tone (одной частоты, не содержащий гармоник) | |||
pure sound; pure tone; simple tone; single-frequency tone |
чистые тона : 18 phrases in 9 subjects |
Aviation | 3 |
Electronics | 5 |
Makarov | 1 |
Medical | 2 |
Metrology | 2 |
Occupational health & safety | 1 |
Physics | 1 |
Technology | 2 |
Telecommunications | 1 |