The electrode substrate has the fibers of {HEAD ~ the base fusion} bonded at a cross point by {TAIL ~ heat treatment} 
bonded by
The electrode substrate has the fibers of { HEAD ~ the base fusion } bonded at a cross point by { TAIL ~ heat treatment }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL