With an ultrasonic transducer 30 constructed as described above, {HEAD ~ the drive circuit} impresses the pulse voltage whose phase has been controlled to a prescribed level upon {TAIL ~ the printed circuit terminals} 50 
With an ultrasonic transducer 30 constructed as described above , { HEAD ~ the drive circuit } impresses the pulse voltage whose phase has been controlled to a prescribed level upon { TAIL ~ the printed circuit terminals } 50
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH