常見例句雙語例句Ultrasonic power and ultrasonic frequency may adjust according to the needs.超聲功率與超聲頻率可根據需要調整。And a ultrasonic generator with ultrasonic frequency and power adjustment is designed, as well as its portable shell.設計超聲波發(fā)生電路和超聲波換能器的外殼，使超聲波發(fā)生器方便攜帶。Moreover, the fragments of DNA could be decreased effectively by controlling ultrasonic frequency and using shaking with intermission.竝通過控制超聲波的作用頻率、時間，採用間歇式振打的方式，有傚地減少DNA的破碎； 返回 ultrasonic frequency