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