On the other hand, exhaust gas later diverted through {TAIL ~ the channeled portion} of the adsorber for {HEAD ~ hydrocarbon desorption purposes} tends to be cooled as it passes through the adsorber honeycomb channels and evaporates adsorbed hydrocarbons 
On the other hand , exhaust gas later diverted through { TAIL ~ the channeled portion } of the adsorber for { HEAD ~ hydrocarbon desorption purposes } tends to be cooled as it passes through the adsorber honeycomb channels and evaporates adsorbed hydrocarbons
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH