{HEAD ~ A vertical pipe member} is adapted to receive {TAIL ~ a liquid gas mixture} having gas bubbles of larger diameter therein 
{ HEAD ~ A vertical pipe member } is adapted to receive { TAIL ~ a liquid gas mixture } having gas bubbles of larger diameter therein
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH