{TAIL ~ A method} 1, wherein the microwave radiation is applied to the wood as impulses of {HEAD ~ predetermined duration} and separated by set time intervals or as random impulses to provide treated wood having treated and untreated regions 
{ TAIL ~ A method } 1 , wherein the microwave radiation is applied to the wood as impulses of { HEAD ~ predetermined duration } and separated by set time intervals or as random impulses to provide treated wood having treated and untreated regions
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