hydrogen

英['ha?dr?d?(?)n] 美['ha?dr?d??n]

近義詞

反義詞

復(fù)數(shù):?hydrogens;

So called because it forms water when exposed to oxygen.
顧名思義，就是遇氧可以生成水的氣體。

hydrogen 氫，氫氣

hydro-,水，-gen,生成，詞源同generate.因氫接觸氧氣生成水而得名。

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.

1. Hydrogen is used extensively in industry for the production of ammonia.: 氫氣在工業(yè)上廣泛用于制氨。

2. He mobilized public opinion all over the world against hydrogen-bomb tests.: 他動員全世界的輿論反對氫彈試驗。

3. A hydrogen leak forced NASA to ground the space shuttle.: 氫氣泄漏迫使美國國家航空航天局停止了航天飛機的發(fā)射。

4. Carbon, hydrogen and oxygen combine chemically to form carbohydrates and fats.: 碳、氫、氧化合形成碳水化合物和脂肪。

5. In May engineers found a leak in a hydrogen fuel line.: 5月份工程師們在一條氫燃料管線上發(fā)現(xiàn)一條裂隙。