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Brief description of the drawings
FIG. 1 is a view of the ultrasonic transmitter-receiver according to the present invention, taken
along the line CC in the top view of FIG. FIG. 2 is a top view of the present invention. Number 11
is a ceramic vibration drive plate ', 12 is a diaphragm, 13 is a housing, 14 is an outlet, 15 is a
support portion with a fold, 16 is an equalizer, and 17 is a fixing hole. .