If {HEAD ~ the height} of {TAIL ~ the core partition} is lower than the tip of the nozzle of the core burner, the core partition is not capable of exerting the effect to prevent the airflow 
of
If { HEAD ~ the height } of { TAIL ~ the core partition } is lower than the tip of the nozzle of the core burner , the core partition is not capable of exerting the effect to prevent the airflow
OTH 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