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надтональная частотаstresses
el. superaudio frequency; supersonic frequency; ultra-audible frequency
media. super-audio frequency (выше диапазона 0,3-3,4 кГц)
tech. super-telephone frequency; ultrasonic frequency
tel. supertelephone frequency
надтональная частота: 2 phrases in 2 subjects
Acoustics1
Technology1