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

• A hydrogen leak forced NASA to ground the space shuttle.
  氢气泄漏迫使美国国家航空航天局停止了航天飞机的发射。
• 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。
• The simplest covalently bonded molecule is formed from two hydrogen atoms.
  最简单的共价键分子由两个氢原子组成。
• 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。
• Oxygen, hydrogen and nitrogen are all gases.
  氧气、氢气和氮气都是气体。
• Zinc displaces the hydrogen of dilute acids.
  锌置换了稀酸中的氢。
• Each of the four valency electrons of the carbon atom is shared with one of a hydrogen atom.
  碳原子的四个价电子都各与氢原子的一个价电子共用。
• Hydrogen is a one-valence element.
  氢是一价的元素。
• Water is made up of atoms of hydrogen and oxygen.
  水由氢和氧的原子构成。
• 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。