Therefore, it is possible to realize a method for transmitting an ultrasonic wave, the method having {TAIL ~ a high flexibility} of {HEAD ~ detection area control} 
Therefore , it is possible to realize a method for transmitting an ultrasonic wave , the method having { TAIL ~ a high flexibility } of { HEAD ~ detection area control }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD