{HEAD ~ Preferred reactor pressure} is from {TAIL ~ about 10 Torr} to about 100 Torr 
is from
{ HEAD ~ Preferred reactor pressure } is from { TAIL ~ about 10 Torr } to about 100 Torr
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH