The wire compression roller 32 is positioned so that it lies on the side of the welding wire 1 opposite the wire driving roller 30 and so that {HEAD ~ the exterior radial surface} of the wire compression roller 32 is in {TAIL ~ contact} with the welding wire 1 
is in
The wire compression roller 32 is positioned so that it lies on the side of the welding wire 1 opposite the wire driving roller 30 and so that { HEAD ~ the exterior radial surface } of the wire compression roller 32 is in { TAIL ~ contact } with the welding wire 1
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 HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH