The transducer elements are impressed with {TAIL ~ voltage} through the printed circuit and ground electrode to issue {HEAD ~ ultrasonic waves} 
The transducer elements are impressed with { TAIL ~ voltage } through the printed circuit and ground electrode to issue { HEAD ~ ultrasonic waves }
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD