The ply member is formed a plurality of {HEAD ~ belt shaped members} having {TAIL ~ a width} obtained by multiplying π inches by an integral number and a constant length 
having
The ply member is formed a plurality of { HEAD ~ belt shaped members } having { TAIL ~ a width } obtained by multiplying π inches by an integral number and a constant length
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH