A rotor includes a high temperature section and {HEAD ~ a low temperature section} on {TAIL ~ its circumference} 
on
A rotor includes a high temperature section and { HEAD ~ a low temperature section } on { TAIL ~ its circumference }
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL