系统软件 操作系统 释文 chain scheduling 链式调度
- National Air and Space Museum
- National Alliance
- National American Woman Suffrage Association
- National Amusements
- National and Kapodistrian University of Athens
- National Animal Disease Center
- National Animal Quarantine Institute, Ministry of Agriculture of the People's Republic of China
- National Anthem
- national anthem
- National Aquatics Center
- National Aquatics Center (Water Cube)
- National Archaeological Museum of Athens
- National Archives and Records Administration
- National Archives and Records Centre Act of Singapore
- National Archives and Records Service of South Africa
- National Archives of Australia
- National Archives of Brazil / Arquivo Nacional
- National Archives of Finland
- National Archives of India
- National Archives of Japan
- National Archives of Korea
- National Archives of Malaysia
- National Archives of Pakistan
- National Archives of Russian Federation
- National Archives of Singapore