In {HEAD ~ the alternative} to {TAIL ~ assembly} 22, a specular surface may be formed by vapor deposition of aluminum directly onto the surface 21 of the support 20 
to
In { HEAD ~ the alternative } to { TAIL ~ assembly } 22 , a specular surface may be formed by vapor deposition of aluminum directly onto the surface 21 of the support 20
OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH