soundproofing qualities

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• Nissan March — The next version of the March/Micra, the K12, was unveiled in late 2002. The car was radically redesigned: it featured a new, 70 mm longer wheelbase (developed with Renault) and an even more curvy exterior that was taller and slightly wider. Its… …   Wikipedia

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• acoustic — adj. & n. adj. 1 relating to sound or the sense of hearing. 2 (of a musical instrument, gramophone, or recording) not having electrical amplification (acoustic guitar). 3 (of building materials) used for soundproofing or modifying sound. 4 Mil.… …   Useful english dictionary