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technology associated with the production and utilization of sound having a frequency higher than about 15 kHz, heli saamise ja kasutamisega sagedusega üle 15 kHz seotud tehnoloogia
ehhotehnika . Materjalitehnika terminibaas. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//mtr/ehhotehnika/1/est (21.06.2026)
