{HEAD ~ A water transport unit} is integrated into {TAIL ~ the fuel cell} so that the size, weight and complexity of a fuel cell is minimized 
is integrated into
{ HEAD ~ A water transport unit } is integrated into { TAIL ~ the fuel cell } so that the size , weight and complexity of a fuel cell is minimized
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH