{HEAD ~ The invention} also provides {TAIL ~ a polishing pad} having a layer of the cushion for a polishing pad and a polishing layer 
{ HEAD ~ The invention } also provides { TAIL ~ a polishing pad } having a layer of the cushion for a polishing pad and a polishing layer
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH