node互联网档案馆的存檔,存档日期2007-03-09., entry in The Columbia Encyclopedia, 6th ed., New York: Columbia University Press, 2001–04. Accessed on line May 17, 2007.
line of nodes (页面存档备份,存于互联网档案馆), entry in The Encyclopedia of Astrobiology, Astronomy, and Spaceflight, David Darling, on line, accessed May 17, 2007.
ascending node (页面存档备份,存于互联网档案馆), entry in The Encyclopedia of Astrobiology, Astronomy, and Spaceflight, David Darling, on line, accessed May 17, 2007.
node互联网档案馆的存檔,存档日期2007-03-09., entry in The Columbia Encyclopedia, 6th ed., New York: Columbia University Press, 2001–04. Accessed on line May 17, 2007.
line of nodes (页面存档备份,存于互联网档案馆), entry in The Encyclopedia of Astrobiology, Astronomy, and Spaceflight, David Darling, on line, accessed May 17, 2007.
ascending node (页面存档备份,存于互联网档案馆), entry in The Encyclopedia of Astrobiology, Astronomy, and Spaceflight, David Darling, on line, accessed May 17, 2007.