{HEAD ~ The adiabatic chamber} is defined by {TAIL ~ side walls} and by at least two evaporation honeycomb fill packs  
is defined by
{ HEAD ~ The adiabatic chamber } is defined by { TAIL ~ side walls } and by at least two evaporation honeycomb fill packs
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH