{HEAD ~ An assembly} is provided for evaporating {TAIL ~ one or more solid materials} within the chamber 14 
{ HEAD ~ An assembly } is provided for evaporating { TAIL ~ one or more solid materials } within the chamber 14
HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH