The materials can be selected to have a desired size or size distribution, and can be evenly distributed throughout {HEAD ~ the composition} to provide {TAIL ~ controlled porosity} 
to provide
The materials can be selected to have a desired size or size distribution , and can be evenly distributed throughout { HEAD ~ the composition } to provide { TAIL ~ controlled porosity }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL