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