The mixture of air and ozone is then discharged into the water within {TAIL ~ the sterilizing chamber} in {HEAD ~ the form} of fine bubbles 
The mixture of air and ozone is then discharged into the water within { TAIL ~ the sterilizing chamber } in { HEAD ~ the form } of fine bubbles
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH