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