{HEAD ~ The cooling air flow} can be precisely controlled by optimizing the size, shape and {TAIL ~ number} of transfer tubes 196, apertures 202 and apertures 204 
precisely controlled by optimizing
{ HEAD ~ The cooling air flow } can be precisely controlled by optimizing the size , shape and { TAIL ~ number } of transfer tubes 196 , apertures 202 and apertures 204
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL REL REL OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH