{HEAD ~ Advantages} provided by the present invention include {TAIL ~ improved ability} to extend the useful life of metallic articles and, in particular, gas turbine engine rotors and rotor components as compared to currently available methods 
{ HEAD ~ Advantages } provided by the present invention include { TAIL ~ improved ability } to extend the useful life of metallic articles and , in particular , gas turbine engine rotors and rotor components as compared to currently available methods
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