Alumina, the matrix material, has {HEAD ~ a thermal expansion coefficient} in {TAIL ~ the order} of 8 10 6 K 1  
in
Alumina , the matrix material , has { HEAD ~ a thermal expansion coefficient } in { TAIL ~ the order } of 8 10 6 K 1
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH