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