The leftmost weir does, however, to differentiate {HEAD ~ the different air receivers} below {TAIL ~ the fluidizing plate} 
below
The leftmost weir does , however , to differentiate { HEAD ~ the different air receivers } below { TAIL ~ the fluidizing plate }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL