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