hydrogen

英 ['haɪdrədʒ(ə)n] 美['haɪdrədʒən]

CET4TEM4IELTS考研TOEFLCET6中低频词常用词汇

复数: hydrogens;

So called because it forms water when exposed to oxygen.
顾名思义，就是遇氧可以生成水的气体。

hydrogen 氢，氢气

hydro-,水，-gen,生成，词源同generate.因氢接触氧气生成水而得名。

1. a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe

hydrogen: hydrogen: [18] Greek húdōr ‘water’ (a distant relative of English water) has been a prolific source of English vocabulary. Amongst its contributions are hydrangea [18] (literally ‘water-vessel’, so named from the cuplike shape of its seedpods), hydrant [19], hydrate [18], hydraulic [17] (literally ‘of a water-pipe’), hydrofoil [20], and hydroponics [20] (literally ‘water-culture’). Hydrogen itself means literally ‘generating water’, and was coined in French as hydrogène in the late 1780s for hydrogen’s property of forming water when oxidized. It is first recorded in English in 1791.
=> water
hydrogen (n.): 1791, from French hydrogène, coined 1787 by G. de Morveau, Lavoisier, Berthollet, and Fourcroy from Greek hydr-, stem of hydor "water" (see water (n.1)) + French -gène "producing" (see -gen). So called because it forms water when exposed to oxygen. Nativized in Russian as vodorod; in German, it is wasserstoff, "water-stuff." An earlier name for it in English was Cavendish's inflammable air (1767). Hydrogen bomb first recorded 1947; shortened form H-bomb is from 1950.

Most hydrogen and oxygen atoms in water are stable, but traces of both elements are also present as heavier isotopes.

Hydrogen is used extensively in industry for the production of ammonia.: 氢气在工业上广泛用于制氨。

He mobilized public opinion all over the world against hydrogen-bomb tests.: 他动员全世界的舆论反对氢弹试验。

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。

In May engineers found a leak in a hydrogen fuel line.: 5月份工程师们在一条氢燃料管线上发现一条裂隙。

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 can be reduced to oxygen and hydrogen by electrolysis.: 用电解法可以把水分解为氧和氢.

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.