Additionally, the low thermal expansion sealing ring reduces the clearance C,C demanded between the interface between the sealing surface and the tip of {HEAD ~ the plurality} of {TAIL ~ turbine blades} 
of
Additionally , the low thermal expansion sealing ring reduces the clearance C , C demanded between the interface between the sealing surface and the tip of { HEAD ~ the plurality } of { TAIL ~ turbine blades }
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 REL TAIL TAIL TAIL TAIL TAIL TAIL