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audio frequency

['ɔ:dɪəu'fri:kwənsɪ]
avia. звукова низька частота
commun. низькочастотний
radio звукова́ частота́
 English thesaurus
audio frequency ['ɔ:dɪəu'fri:kwənsɪ]
abbr., construct. a.f.
audio-frequency
: 10 phrases in 4 subjects
Aviation3
Communications5
Construction1
Technology1