Qhov tsim nyog zaus thiab impedance kho yog qhov tseem ceeb rau txhua lub ultrasonic. Qhov ntau zaus nyob ntawm qhov ntev (xws li: ntev ntawm lub sonotrode) thiab lub impedance ntawm qhov zoo ntawm cov khoom siv, sib dhos, thiab txuas ntawm cov ntsiab lus acoustic 'ntu. Kev hloov pauv qhia tau qhov yuav tsum tau ua kom zoo, ua kom huv, rov ua haujlwm lossis rov sib dhos dua.

Tsim nyob rau xyoo 1990, peb tam sim no lub npe hu ua ib qho ntawm kev ua ntsuas ultrasonic ntsuas cov tuam ntxhab thiab cov muag khoom. Yog tias koj txaus siab rau kev ntsuas ntsuas ultrasonic, txais tos hu rau peb lub Hoobkas hauv Suav.

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