BritishengineersatacompanycalledReactionEngines,havesu...
问题详情: BritishengineersatacompanycalledReactionEngines,havesuccessfullytestedawholenewkindofjetengine,namedSabre,FinancialTimesisreporting,sothatthetimeoflong-distanceflightcouldbehalved,orevenquar...