National Aeronautics and Space Administration (USA)国家航空和航天局(美国) National Aeronautics and Space Administration美国国家航空太空总署 North American Saxophone Alliance北美萨克斯风联盟 National Association of Signing Agents协会的签约代理商 NASA Food Technology Commercial Space Center美国航空航天总署食品技术中心 Normal Atmosphere Safety Approval正常的气氛安全批准 National Aeronautics and Space Act国家航空和空间的行为 Nursing Association of South Australia南澳大利亚的护理协会 Non-Active Side Arm (oilfield)非侧臂(油田) National Association of State Archaeologists考古学家在协会的状态 Navy Alpine Snowsports Association (Australia)高山Snowsports协会(澳大利亚海军) Natural Athlete Strength Association自然的运动员力量协会 National Auto Sport Association全国汽车运动联合会 Newspaper Advertising Sales Association报纸广告销售协会 National Advertising Sales Association国家的广告销售协会