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20Khz qalabka kala firdhiso ultrasonic
Tiknoolajiyada kala firdhinta Ultrasonic waxay ka adkaataa dhibaatooyinka kala firidhsanaanta dhaqanka in qaybaha kala firdhiso aysan ku filneyn, dareeraha kala firdhiyo waa mid aan degganeyn, waana ay fududahay in la delaminate.