In {HEAD ~ order} to reduce {TAIL ~ the flow resistance} in the gas path of the lance, the through openings each have an opening width which is larger in the circumferential direction than in the radial direction 
to reduce
In { HEAD ~ order } to reduce { TAIL ~ the flow resistance } in the gas path of the lance , the through openings each have an opening width which is larger in the circumferential direction than in the radial direction
OTH HEAD HEAD HEAD HEAD HEAD REL 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