NASA has designed a supersonic plane that it hopes will help reduce flight time for international travelers, and its design is intended to reduce the noise of the jet to well below that of the Concorde.
NASAhasdesignedasupersonicplanethatithopeswillhelpreduceflighttimeforinternationaltravelers,anditsdesignisintendedtoreducethenoiseofthejettowellbelowthatoftheCo
简体中文
