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path travelled by an ultrasonic signal between a pair of ultrasonic transducers, kahe ultrahelimuundurivaheline ultrahelisignaali läbimisteekond
ultraheliliin . Metroloogia terminibaas. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//mea/ultraheliliin/1/est (04.07.2026)
