nit rogen

英 美
  • 氮素
  • nit n.虱子;没用的人
  • Rogen n.罗根湖(在瑞典;东经12º25'北纬62º20')
名词 nitrogen:
  1. a common nonmetallic element that is normally a colorless odorless tasteless inert diatomic gas; constitutes 78 percent of the atmosphere by volume; a constituent of all living tissues