Hydrogen
['haɪdrədʒ(ə)n] or ['haɪdrədʒən]
解释:
(noun.) 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.
格斯编辑--From WordNet
解释:
(n.) A gaseous element, colorless, tasteless, and odorless, the lightest known substance, being fourteen and a half times lighter than air (hence its use in filling balloons), and over eleven thousand times lighter than water. It is very abundant, being an ingredient of water and of many other substances, especially those of animal or vegetable origin. It may by produced in many ways, but is chiefly obtained by the action of acids (as sulphuric) on metals, as zinc, iron, etc. It is very inflammable, and is an ingredient of coal gas and water gas. It is standard of chemical equivalents or combining weights, and also of valence, being the typical monad. Symbol H. Atomic weight 1.
亚历山大校对
同义词及近义词：
n. (Chem.) Inflammable air.
海因里希录入
解释:
n. a gas which in combination with oxygen produces water an elementary gaseous substance the lightest of all known substances and very inflammable.—adjs. Hy′dric containing hydrogen; Hydrog′enous containing hydrogen: produced by the action of water as applied to rocks in opposition to those that are pyrogenous formed by the action of fire.
编辑:奥斯本
例句:
- A siren worked by explosion of small quantities of oxygen and hydrogen mixed. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
- The atom, to be sure, can no longer be consider ed the smallest unit of matter, as the mass of a β particle is approximately one seventeen-hundredths that of an atom of hydrogen. 李贝. 西洋科学史.
- The next process is the purification of the gas from carbonic acid and sulphuretted hydrogen. 弗雷德里克·科利尔·贝克维尔. 伟大的事实.
- Often he jeopardized his life, and once nearly lost it, by breathing carburetted hydrogen. 鲁伯特·萨金特·荷兰. 历史性发明.
- In January of 1884, Wroblewski confirmed the liquefaction of hydrogen, which had been imperfectly accomplished by Cailletet before. Edward W. Byrn. 十九世纪发明进展.
- According t o Avogadro the water vapor contains twice as many atoms of hydrogen as of oxygen. 李贝. 西洋科学史.
- The hydrogen formed by the chemical action of the dilute sulphuric acid on the zinc moves toward the copper electrode, as in the simple voltaic cell. 伯莎M.克拉克. 科学通论.
- Examination of the cell shows that the copper plate is covered with hydrogen bubbles. 伯莎M.克拉克. 科学通论.
- The same effect is caused by the combustion of the carburretted hydrogen gas, and in a more perfect manner. 弗雷德里克·科利尔·贝克维尔. 伟大的事实.
- Two atoms of the element hydrogen unite with one atom of the element oxygen to make one molecule of water. 伯莎M.克拉克. 科学通论.
- An important fact about hydrogen is that in burning it gives as much heat as five times its weight of coal. 伯莎M.克拉克. 科学通论.
- He took up the question, experimented with fire-damp, and found that it was in reality light carburetted hydrogen. 鲁伯特·萨金特·荷兰. 历史性发明.
- It is called olefiant gas, and contains equal measures of hydrogen gas and carbon vapour; its specific gravity is 0. 弗雷德里克·科利尔·贝克维尔. 伟大的事实.
- If fine platinum wire is placed in an ordinary gas flame, it does not melt, but if placed in a flame of burning hydrogen, it melts very quickly. 伯莎M.克拉克. 科学通论.
- He concluded that anything which could be created indefinitely by a process of friction could not be a substance, such as sulphur or hydrogen, but must be a mode of motion. 李贝. 西洋科学史.
整理:马库斯