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您所在的位置: 南京文都考研 > 考研专业知识 > 考研英语 > 2023考研英语同源外刊12月文章:制造氧气(1)

2023考研英语同源外刊12月文章:制造氧气(1)

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2023考研英语同源外刊12月文章:制造氧气(1)

考研英语的备考,必须考生很多阅读文章外刊文章。由于阅读和理解考试真题里边的文章,大多数喜爱用外刊。因而,要想扩宽英文知识层面和改进外语水平,大家必须培养每日抽一点時间来说的习惯性!下面,我为众多2023研究生考试学生们得出-考研英语同源外刊12月文章:生产制造氧气(1),供考生阅读文章。

2023考研英语同源外刊12月文章:生产制造氧气(1)

Oxygen is vital. Literally so for breathing, and thus for many hospital patients. And metaphorically for industries ranging from steelmaking to pharmaceuticals, which use it in their processes. The world market for the gas is therefore large. Various estimates put it as having been between about $28bn and $49bn in 2019.It could, though, be larger. In a set of reactions that also involve oxygen and steam, fossil fuels such as coal and natural gas can be turned into hydrogen, a source of energy, and carbon dioxide, which can be separated and sequestered underground. That might allow their continued employment in a world of restricted greenhouse-gas emissions. It would, however, require a cheap and abundant supply of oxygen. Which is why America’s Department of Energy is sponsoring a project intended to pull oxygen from the atmosphere with magnets.

氧气尤为重要,较立即的也是对吸气尤为重要,因此对医疗机构的患者也尤为重要。如同,从钢铁产业到生物制药,这种领域在其生产过程里都要应用氧气。因而氧气的国际市场非常大。各种各样可能觉得,2019年这一数据在280亿至490亿美金中间。但是,它可以更高。在一系列也涉及到氧气和蒸气的化学反应中,煤碳和燃气等不可再生资源可以转变成为氢(一种电力能源)和二氧化碳(可以分离出来并保存在地底)。这也许会让他们在一个温室气体排放受到限制的全世界里再次学生就业。但是,它必须便宜而充分的氧气供货,这就是为何美国能源部冠名赞助了一个致力于用磁石从空气中获取氧气的新项目。

Dry air is a mixture of 21% oxygen, 78% nitrogen and 1% argon, with a few other trace gases such as carbon dioxide. At the moment, most of the world’s pure oxygen is made by the liquefaction and subsequent distillation of air, to separate it into its components. This is done in large factories. The other source of oxygen, somewhat less pure, is small, mobile plants called oxygen concentrators. These either absorb the nitrogen into a porous substance called a zeolite, leaving behind a gas that is 90% oxygen, or force air through membranes more permeable to one gas than the other, yielding a somewhat less rich mixture. The alternative of magnetic separation is the brainchild of John Vetrovec, boss of Aqwest, a technology firm in Larkspur, Colorado.

干躁的气体是21%的氧气、78%的氦气和1%的氩气瓶的混合物质,也有一些别的的少量汽体,如二氧化碳。现阶段,全世界绝大多数的氧气全是根据气体的汽化和以后的水蒸气蒸馏获得的,并将其转化成各种各样成份。这一全过程是在大加工厂里进行的。另一种纯净度略低的氧气来自一种中小型的、可运动的氧气浓缩罐。他们要不将N2消化吸收成一种称为活性碳的多孔结构成分,留有一种含90%氧气的汽体,要不驱使气体越过一种一种汽体比另一种气体更非常容易渗入的塑料薄膜,进而造成一种成分略低的混合物质。另一种磁性分离出来方式是由科罗拉多州拉克斯波市的一家技术性企业Aqwest的老总罗伯特·威尔威克想出去的。

Though oxygen cannot be magnetised permanently in the way that elements like iron can, it is attracted by magnetic fields. As a consequence, when air is pumped through such a field its oxygen gets concentrated in those places where the field is strongest. This concentration-enhancement is small. But if the oxygen-enriched part of the air stream could be separated from the oxygen-impoverished part, and then treated in the same way over and over again, it could be enriched to the point where it was pure enough to be useful. Dr Vetrovec thinks he knows how to do this.

氧气尽管无法像铁那般被***性被磁化,但它依然会被电磁场吸引住。結果便是,当气体被抽过那样一个场时,之中的氧气便会集中化在这个场极强的地区。这类浓度值提高功效不大。可是,假如能将气旋中氧气充足一部分与贫氧部分分离出来起来,随后以一样的方法不断解决,氧气就可以提液到充足纯的水平,进而充分发挥。威尔威克博士研究生觉得自身了解怎样保证这一点。

综上所述是-2023考研英语同源外刊12月文章:生产制造氧气(1),期待对复习2023研究生考试的小伙子们有些协助!恭祝考生2023研究生考试考出好成绩!

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