More specifically, the invention relates to {TAIL ~ a system} for producing {HEAD ~ electrical power} with a fuel cell, especially a proton exchange membrane fuel cell  
More specifically , the invention relates to { TAIL ~ a system } for producing { HEAD ~ electrical power } with a fuel cell , especially a proton exchange membrane fuel cell
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH