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