{HEAD ~ This invention} is directed generally to turbine blades, and more particularly to hollow turbine blades having an intricate maze of cooling channels for passing {TAIL ~ fluids}, such as air, to cool the blades 
{ HEAD ~ This invention } is directed generally to turbine blades , and more particularly to hollow turbine blades having an intricate maze of cooling channels for passing { TAIL ~ fluids } , such as air , to cool the blades
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