Gas or liquid {HEAD ~ shrouding} of gas streams in the treatment system may be provided by {TAIL ~ high efficiency inlet structures} 
provided by
Gas or liquid { HEAD ~ shrouding } of gas streams in the treatment system may be provided by { TAIL ~ high efficiency inlet structures }
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL