In addition, {TAIL ~ such a process} generally necessitates that the blades and {HEAD ~ disk} have a common composition 
In addition , { TAIL ~ such a process } generally necessitates that the blades and { HEAD ~ disk } have a common composition
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH