A gas supplying apparatus 1, wherein {HEAD ~ said feed means} is {TAIL ~ pressurized gas} introduced into said auxiliary vessel 
is
A gas supplying apparatus 1 , wherein { HEAD ~ said feed means } is { TAIL ~ pressurized gas } introduced into said auxiliary vessel
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH