{TAIL ~ The method} 13, wherein the change to the localized environment caused by providing the at least one source of pressure differential includes cooling combustion product gasses by {HEAD ~ at least 25%} compared to the temperature of the energy source relative to the temperature of the surface 
{ TAIL ~ The method } 13 , wherein the change to the localized environment caused by providing the at least one source of pressure differential includes cooling combustion product gasses by { HEAD ~ at least 25 % } compared to the temperature of the energy source relative to the temperature of the surface
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