A porous electrode substrate 1 in which {HEAD ~ the maximum particle size} for the seal material is {TAIL ~ about 5 microns} 
is
A porous electrode substrate 1 in which { HEAD ~ the maximum particle size } for the seal material is { TAIL ~ about 5 microns }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL