National Center for Supercomputing Applications（美国）国家超级计算应用中心 National Computer Security Association美国全国计算机安全协会 NATO CIS Services Agency北约CIS服务机构 National Computer Science Association (firewall certification)全国计算机科学协会(防火墙认证) Non-Commercial Sustaining Announcement非商业性支撑公告 National Cyber Security Alliance国家网络安全同盟 National Computational Science Alliance全国计算科学联盟 North Carolina Society of Anesthesiologists北卡罗莱纳的麻醉 National Crushed Stone Association国家碎石协会 North Carolina School of the Arts北卡罗莱纳的艺术 North Carolina Society of Accountants (Conover, North Carolina)北卡罗莱纳Conover会计师,北卡罗莱那州 National Center for Statistics and Analysis国家统计和分析 National Collegiate Scouting Association (Chicago, Illinois)全国大学生童军运动协会(芝加哥,伊利诺斯州) Naval C4I Systems Architecture海军C4I系统架构 Nossa Senhora Conceição AparecidaNossa Senhora Conceição Aparecida