Accordingly, {HEAD ~ the present invention} has as one feature {TAIL ~ the use} of a powder filler of varying particle size which minimizes porosity by ability to produce a denser packing 
has
Accordingly , { HEAD ~ the present invention } has as one feature { TAIL ~ the use } of a powder filler of varying particle size which minimizes porosity by ability to produce a denser packing
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH