例句
同义词
  • nitrogen的同义词之:
    air
柯林斯高阶英汉双解学习词典释义
  • N-UNCOUNT
    氮;氮气
    Nitrogen is a colourless element that has no smell and is usually found as a gas. It forms about 78% of the earth's atmosphere, and is found in all living things.
英汉词典释义
英英词典释义
  • Noun
    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
行业词典
  • 医学: 氮:无色气体元素,游离于空气中,符号为N;比重0.9713,原子序数7,原子量14.007。为大气的成分,占空气的4/5。化学上几乎为惰性,但结合后可形成硝酸与氨。对生物,氮很重要,是蛋白与核酸的成分,因而存在于所有活细胞内。它是在呼吸中无用的气体;虽无毒性,但只吸入氮气却可致死,因为缺少氧气,它能溶于血及体液内,当大气压降低时,即以气泡游离出来,能造成严重症状。见sickness项下的decompression sickness;〔NF〕氮气:按体积含N2量不少于99%,在药物制剂中用来替代空气;
    机械: 氮氧化物分析仪;nitrogen-oxide ana-lyzer 分析大气中一氧化氮、二氧化氮等氮氧化物的仪器。;