As an additional advantage, {HEAD ~ the stress distribution} of {TAIL ~ the toothed surface} which effects rigity of the belt can be ideal; the density of the nonwoven fabric can be lowered toward the tooth top and raised toward the bottom base 
of
As an additional advantage , { HEAD ~ the stress distribution } of { TAIL ~ the toothed surface } which effects rigity of the belt can be ideal ; the density of the nonwoven fabric can be lowered toward the tooth top and raised toward the bottom base
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH