{TAIL ~ The greatest expanding deflection} of {HEAD ~ the tube} 7 is obtained at the thin pressing portion 7a 
{ TAIL ~ The greatest expanding deflection } of { HEAD ~ the tube } 7 is obtained at the thin pressing portion 7a
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH