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