Each cell is supplied by an inlet port through {TAIL ~ which fluid}, in the case of a hydraulic system, or gas, in {HEAD ~ the case} of a pneumatic system, is introduced into the cell 
Each cell is supplied by an inlet port through { TAIL ~ which fluid } , in the case of a hydraulic system , or gas , in { HEAD ~ the case } of a pneumatic system , is introduced into the cell
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH