hydrogen

英 [ˈhaɪdrədʒən]

美 [ˈhaɪdrədʒən]

n.  氢; 氢气

复数：hydrogens　

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Collins.2 / BNC.5200 / COCA.5103

牛津词典

noun

• 氢；氢气
  a chemical element. Hydrogen is a gas that is the lightest of all the elements. It combines with oxygen to form water.

柯林斯词典

• 氢;氢气
  Hydrogenis a colourless gas that is the lightest and commonest element in the universe.

英英释义

noun

• a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas
  Synonym:Hatomic number 1

双语例句

• Qualitative analysis shows that water is made up of hydrogen and oxygen.
  定性分析表明水是由氢氧结合而成的。
• Water is made up of atoms of hydrogen and oxygen.
  水由氢和氧的原子构成。
• Acids produce positively charged hydrogen atoms when dissolved in water.
  酸在水中溶解时可生成带正电荷的氢原子。
• Some balloons are filled with hydrogen, some with helium.
  有的气球是用氢气充填的，有的则用氦气。
• Catagensis is marked by a loss of hydrogen, and consequently by a decrease of the h/ c ratio.
  后生阶段以氢减少必然导致h／d比率降低为特征。
• Hydrogen is a one-valence element.
  氢是一价的元素。
• The zirconium can react with water to produce zirconium oxide and hydrogen.
  锆可以和水反应，产生氧化锆和氢气。
• Water is composed of hydrogen and oxygen.
  水由氢与氧化合而成。
• Zinc displaces the hydrogen of dilute acids.
  锌置换了稀酸中的氢。
• Among the common toxic gases are sulfur dioxide, methane, the oxides of nitrogen, ammonia, hydrogen sulfide, and hydrogen cyanide; and ( most commonly) carbon monoxide.
  常见的有毒气体有二氧化硫、甲烷、氧化氮、氨、硫化氢、氰化氢以及最常见的一氧化碳。