- 氢;氢气
Hydrogen is a colourless gas that is the lightest and commonest element in the universe.
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.
英英释义
noun
- a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas
Synonym: Hatomic number 1
- 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。 - Carbon, hydrogen and oxygen combine chemically to form carbohydrates and fats
碳、氢、氧化合形成碳水化合物和脂肪。 - 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。 - Hydrogen is a one-valence element.
氢是一价的元素。 - Water is a compound containing the elements hydrogen and oxygen.
水是含有氢元素和氧元素的化合物。 - Water can be resolved [ decomposed] into hydrogen and oxygen.
水可分解为氢和氧。 - Water contains hydrogen and oxygen.
水含有氢和氧。 - 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。 - The first bubbles to escape from the liquid are a mixture of air and hydrogen.
从该液体中最先逸出的气泡是空气和氢的混合物。 - But why water and not, say, hydrogen peroxide or even ammonia?
可是，为什么是水，而不是双氧水或是氨水呢？ - 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。 - 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。 - Hydrogen combines chemically with oxygen to form water.
氢和氧化合成为水。 - 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。 - 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。 - Water is made up of atoms of hydrogen and oxygen.
水由氢和氧的原子构成。 - 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。 - Catalase catalyes the breakdown of hydrogen peroxide.
过氧化氢酶催化过氧化氢的分解。 - It has studied the action of hydrogen peroxide on nitrous acid.
它研究了过氧化氢对亚硝酸的作用。 - Hydrogen and oxygen are the constituents of water.
氢和氧是水的主要成分。 - 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。 - 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。 - And now I have to fill this molecular hydrogen.
现在我填充了分子氢。 - 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。 - This simple molecule consists of one oxygen atom and two hydrogen atoms.
这个简单的水分子由一个氧原子和两个氢原子构成。 - Oxygen, hydrogen and nitrogen are all gases.
氧气、氢气和氮气都是气体。 - 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。 - They have tested a hydrogen bomb.
他们试验了一颗***。