{HEAD ~ The pressure} of the tube is maintained at {TAIL ~ 175 to 200 millitorr} while the reactant gases are flowed in 
is maintained at
{ HEAD ~ The pressure } of the tube is maintained at { TAIL ~ 175 to 200 millitorr } while the reactant gases are flowed in
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH