Electrode layers are formed on {HEAD ~ planes} of a plate shaped piezoelectric element to provide {TAIL ~ an ultrasonic transducer material} 
to provide
Electrode layers are formed on { HEAD ~ planes } of a plate shaped piezoelectric element to provide { TAIL ~ an ultrasonic transducer material }
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL