{HEAD ~ The polycrystalline disk} is fabricated with {TAIL ~ protruding portions} in the location where the blades are to be bonded 
is fabricated with
{ HEAD ~ The polycrystalline disk } is fabricated with { TAIL ~ protruding portions } in the location where the blades are to be bonded
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH