This invention relates to packed tower or packed column structures used for {HEAD ~ intimate contact} between a gas and a liquid to effect {TAIL ~ mass transfer therebetween} 
to effect
This invention relates to packed tower or packed column structures used for { HEAD ~ intimate contact } between a gas and a liquid to effect { TAIL ~ mass transfer therebetween }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL