【化学】静音振动，多层分裂

supersonic【声】;ultrasonic【声】

ultrasonic Doppler blood pressure sensor【内科】

ultrasonic cleaning machine【机】

Ultrasonic Cleaners

ultrasonic Doppler flowmeter

real-time B-mode ultrasonic scanner

transmitting ULTRASONIC(S) acoustic waves

two dimensional ultrasonic cardiogram