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