However, the horizontal gas flow flows far above from the tip of the core burner flame, so that it is possible to raise the height of the core partition to the extent such that {HEAD ~ the core partition} does not prevent {TAIL ~ the flow} of the horizontal gas 
not prevent
However , the horizontal gas flow flows far above from the tip of the core burner flame , so that it is possible to raise the height of the core partition to the extent such that { HEAD ~ the core partition } does not prevent { TAIL ~ the flow } of the horizontal gas
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 OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH