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