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