The method 1, which comprises {HEAD ~ the steps} of cutting {TAIL ~ the notches} extending in the array direction and a direction perpendicular to the array direction and providing a plurality of transducer elements extending in the array direction 
of cutting
The method 1 , which comprises { HEAD ~ the steps } of cutting { TAIL ~ the notches } extending in the array direction and a direction perpendicular to the array direction and providing a plurality of transducer elements extending in the array direction
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH