Second, by holding liquid water against the water transfer membrane 930 it provides {HEAD ~ a more consistent supply} of {TAIL ~ water} to the moisture accepting fluid channel 920, thereby acting as a water buffer 
Second , by holding liquid water against the water transfer membrane 930 it provides { HEAD ~ a more consistent supply } of { TAIL ~ water } to the moisture accepting fluid channel 920 , thereby acting as a water buffer
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH