hydrogen

英 [ˈhaɪdrədʒən]

美 [ˈhaɪdrədʒən]

n. 氢; 氢气

复数：hydrogens　

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.

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

noun

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

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。
And now I have to fill this molecular hydrogen.
现在我填充了分子氢。
Hydrogen combines chemically with oxygen to form water.
氢和氧化合成为水。
Hydrogen and oxygen are the constituents of water.
氢和氧是水的主要成分。
They'd have a lot of hydrogen sulfide gas bound up in their cells.
他们的牢房里有大量的硫化氢气体。
The classification, characteristics and current situation for method and technology of aluminum melt hydrogen removal has been summarized.
概述了铝熔体除氢方法和技术的分类、特点和发展现状，并对其发展趋势进行了展望。
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。
Water is composed of hydrogen and oxygen.
水由氢与氧化合而成。
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。
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。