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нижние частоты stresses
audio.el.	bass
mus.	low end (Баян)
telecom.	lower frequencies (спектра)
нижние звуковые частоты
el.	bass (ниже 256 Гц)
media.	bass (ниже 200 Гц)
нижняя звуковая частота
el.	bass frequency

нижние частоты: 203 phrases in 29 subjects

Acoustics	3
Antennas and waveguides	2
Astronautics	6
Audio electronics	2
Automated equipment	4
Aviation	2
Cables and cable production	3
Cinematography	1
Computers	3
Electrical engineering	6
Electronics	53
Energy industry	4
Hi-Fi	3
Household appliances	1
Information technology	4
Makarov	21
Mass media	26
Military	5
Nanotechnology	3
Nuclear physics	1
Oil and gas	1
Photography	1
Physics	1
Power system protection	1
Quantum electronics	1
Radio	2
Technology	29
Telecommunications	11
Радиоактивное излучение	3