{TAIL ~ The sparging} of the gas bubbles is the main mechanism for {HEAD ~ mixing}, catalyst suspension, and dispersion 
{ TAIL ~ The sparging } of the gas bubbles is the main mechanism for { HEAD ~ mixing } , catalyst suspension , and dispersion
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH