Liquid nitrogen is inert, colorless, odorless, non corrosive, nonflammable, and extremely cold. Nitrogen makes up the major portion of the atmosphere (78.03% by volume, 75.5% by weight).

 
  • 液态氮是惰性的,无色,无嗅,无腐蚀性,不可燃,温度极低。氮构成了大气的大部分(体积比78.;03%25,重量比75
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