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Chainsaw — For other uses, see Chainsaw (disambiguation). An arborist using a chainsaw to fell a eucalyptus tree A chainsaw (or chain saw) is a portable mechanical saw, powered by electricity, compressed air, hydraulic power, or most common … Wikipedia
Urban search and rescue — also known as USAR, or Urban SAR [In the US due to legal issues involving potential confusion with the United States Army Reserve] involves the location, extrication, and initial medical stabilization of victims trapped in confined spaces.… … Wikipedia

Словари и энциклопедии на Академике