In addition, the arcuate shape facilitates {TAIL ~ the introduction} of the fibre sliver into {HEAD ~ the injector} disposed a short distance above the trough bottom 
In addition , the arcuate shape facilitates { TAIL ~ the introduction } of the fibre sliver into { HEAD ~ the injector } disposed a short distance above the trough bottom
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH