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