{HEAD ~ A method} of converting {TAIL ~ gas bubbles} in such liquid gas mixture to gas microbubbles is further disclosed 
of converting
{ HEAD ~ A method } of converting { TAIL ~ gas bubbles } in such liquid gas mixture to gas microbubbles is further disclosed
HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH