The application and principle of ultrasonic waves
Addtime：2019-03-21 09:46:24 Visits：1160 Share：
Scientists refer to the number of vibrations per second as the frequency of sound, and its unit is Hertz (HZ). The frequency of sound waves that our human ears can hear is 20Hz- 20,000Hz. Therefore, we refer to sound waves with frequencies higher than 20,000 Hz as "". "Ultrasonic waves" . Ultrasound is a frequency that exceeds that of human hearing. The sound wave within the rate range has the characteristics of high frequency, accurate directionality and strong penetration ability. As a highly practical technology, its application scenarios are not
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