Inner conductor 532 is highly {HEAD ~ electrically conductive material} such as copper or {TAIL ~ aluminum} 
such as
Inner conductor 532 is highly { HEAD ~ electrically conductive material } such as copper or { TAIL ~ aluminum }
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH TAIL TAIL TAIL TAIL TAIL