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gases    音标拼音: [g'æsəz] [g'æsɪz]
n. 气体

气体

Gas \Gas\ (g[a^]s), n.; pl. {Gases} (g[a^]s"[e^]z). [Invented by
the chemist Van Helmont of Brussels, who died in 1644.]
1. An a["e]riform fluid; -- a term used at first by chemists
as synonymous with air, but since restricted to fluids
supposed to be permanently elastic, as oxygen, hydrogen,
etc., in distinction from vapors, as steam, which become
liquid on a reduction of temperature. In present usage,
since all of the supposed permanent gases have been
liquified by cold and pressure, the term has resumed
nearly its original signification, and is applied to any
substance in the elastic or a["e]riform state.
[1913 Webster]

2. (Popular Usage)
(a) A complex mixture of gases, of which the most
important constituents are marsh gas, olefiant gas,
and hydrogen, artificially produced by the destructive
distillation of gas coal, or sometimes of peat, wood,
oil, resin, etc. It gives a brilliant light when
burned, and is the common gas used for illuminating
purposes.
(b) Laughing gas.
(c) Any irrespirable a["e]riform fluid.
[1913 Webster]

3. same as {gasoline}; -- a shortened form. Also, the
accelerator pedal of a motor vehicle; used in the term "
step on the gas".
[PJC]

4. the accelerator pedal of a motor vehicle; used in the term
" step on the gas".
[PJC]

5. Same as {natural gas}.
[PJC]

6. an exceptionally enjoyable event; a good time; as, The
concert was a gas. [slang]
[PJC]

Note: Gas is often used adjectively or in combination; as,
gas fitter or gasfitter; gas meter or gas-meter, etc.
[1913 Webster]

{Air gas} (Chem.), a kind of gas made by forcing air through
some volatile hydrocarbon, as the lighter petroleums. The
air is so saturated with combustible vapor as to be a
convenient illuminating and heating agent.

{Gas battery} (Elec.), a form of voltaic battery, in which
gases, especially hydrogen and oxygen, are the active
agents.

{Gas carbon}, {Gas coke}, etc. See under {Carbon}, {Coke},
etc.

{Gas coal}, a bituminous or hydrogenous coal yielding a high
percentage of volatile matters, and therefore available
for the manufacture of illuminating gas. --R. W. Raymond.

{Gas engine}, an engine in which the motion of the piston is
produced by the combustion or sudden production or
expansion of gas; -- especially, an engine in which an
explosive mixture of gas and air is forced into the
working cylinder and ignited there by a gas flame or an
electric spark.
[1913 Webster]


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  • List of gases - Wikipedia
    This is a list of gases at standard conditions, which means substances that boil or sublime at or below 25 °C (77 °F) and 1 atm pressure and are reasonably stable
  • gases - 搜索 词典
    4 These gases build up in the earth 's atmosphere, and trap the heat from the sun 这些 气体 聚集 在 地球 的 大气层 中, 使得 太阳 的 热量 无法 散发 出去。
  • Gas - Wikipedia
    Because most gases are difficult to observe directly, they are described through the use of four physical properties or macroscopic characteristics: pressure, volume, number of particles (chemists group them by moles) and temperature
  • Gas: Definition, Properties, Types, Examples, Uses, Behavior
    What is a gas Learn its characteristics facts Explore different kinds of gases with examples their uses Understand how gases behave under various conditions
  • 为什么gas和gases都是气体的意思?_百度知道
    gas和gases都是表示气体的意思,这是由于语言的演变和用法所致。 词汇变形与语境适应:在英语中,”gas”在泛指一般气体时使用原形;但当需要表示特定种类的气体或多种气体时,常常会通过加”es”的形式来表示复数,这符合英语中名词复数形式变化的规则。
  • Gas | Definition, State of Matter, Properties, Structure, Facts . . .
    gas, one of the three fundamental states of matter, with distinctly different properties from the liquid and solid states The remarkable feature of gases is that they appear to have no structure at all
  • 10: Gases - Chemistry LibreTexts
    Elements that exist as gases at room temperature and pressure are clustered on the right side of the periodic table; they occur as either monatomic gases (the noble gases) or diatomic molecules (some halogens, N₂, O₂)
  • gases是什么意思_gases的翻译_音标_读音_用法_例句_爱词霸在线词典
    More than paradise lost, a perishing rain forest could trigger a domino effect - sending winds and rains kilometers off course and loading the skies with even greater levels of greenhouse gases - that will be felt far beyond the Amazon basin
  • Gases | An Open Access Journal from MDPI
    Gases is an international, peer-reviewed, open access journal on the field of applied science and engineering advances in natural gas, greenhouse gas control, and gas sensors, published quarterly online by MDPI
  • 11: Gases - Chemistry LibreTexts
    Of the three basic phases of matter—solids, liquids, and gases—only one of them has predictable physical properties: gases In fact, the study of the properties of gases was the beginning of the development of modern chemistry from its alchemical roots





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