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P-methoxybenzeneacetonitrile was prepared in 34. 8% yield starting from anisole, via chloromethylation, cyanogenation and fractional distillation.

以苯甲醚原料,经氯甲基化,氰化反应后,通获得对甲氧基苯乙腈,总收率34.8%。

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Codistillation is distillation which is performed on mixtures in which the two compounds are not miscible.

是对由不易混合的两种化合物组成的混合物进行的

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Studies indicate that chymist coprecipitation annexed azeotropic distillation can better prevent from hard-agglomeration and obtains homodisperse nanoparticle.

研究表明,在共沉淀法中辅以共沸程,可以较好地防止粉体的硬团聚,得到分散均匀的纳米级超细粉体。

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The distillation system design of isomeric dichlorotoluene and its production process are given in detail in this paper.

详细讨论了二氯甲苯异系统的工程设计与生产程。

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The quality of green oxane can be up-graded by addition of acid followed by distillation or by p...

对青叶烷加酸再或长期贮存,可以提高产质量。

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Definition: Nutmeg oil is obtained by steam distillation of the dried and crushed kernels of Myristica fragrans Houtt.

肉豆蔻科植物肉豆蔻树Myristica fragrans Houtt.压碎的新鲜果仁经水获得的挥发油。

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By fuming with sulfuric-phosphoric acid mixture the residual hydrofluoride was then expelled,and boron was finally determined by curcumin spectrophotometry after distillation.

同时,对所拟溶样条件下所得硼的分析结果是否全硼问题进行了进一步探讨,结果证实,所拟溶样条件下硼的测定结果全硼

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Energy-saving ethanol dehydration techniques to produce dehydrated alcohol mainly included four measures as azeotropy distillation, extraction distillation, absorptive process and membrane separation.

摘要节能型乙醇脱水制备无水乙醇的方法主要有4种:共沸精法、萃取精法、吸附法和膜分离法。

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The main factors that influence the extractive distillation were researched such as the theoretical plate number, feedboard, solvent ratio, reflux ratio, the temperature of solvent.

计算考察了理论板数、进料位置、溶剂比、回流比、萃取剂温度等主要影响因素的改变对萃取程的影响,工业应用提供理论与实践基础。

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To prepare Muxiang shunqi oral liquid,steam distillation,diacolation and decoction methods were adopted and compared. The results show that the steam distillation is the best process.

采用水提取法、渗漉法和煎煮法制备木香顺气口服液。通的理化性质及薄层色谱的比较,确定水提取法最佳工艺,并确定最佳流程。

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With the carbonium 5 separation unit as an example, the operational performance and the energy saving effects of the thermal-ly coupled distillation was simulated and analyzed for the nonideal system.

以碳五分离装置例,对热偶用于非理想体系的操作特性和节能效果进行了模拟分析与研究。

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双语版 TED-Ed 演讲精选

That changed with the invention of a process called distillation.

蒸馏的发明改变了这一切

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Scishow 精选系列

But distillation isn't all it takes to make perfume.

但是蒸馏并不是制造香水的全部。

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怪奇物语 第一季

During fractional distillation, hydrocarbons are separated according to their......- Melting point.

馏过程中烃类是以什么离开的?- 熔点。

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史蒂芬‧金谈写作

All the arts depend upon telepathy to some degree, but I believe that writing offers the purest distillation.

一切艺术一定程度上都要仰仗心灵感应,但我相信写作是最纯粹的一种

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科学大揭秘

In the process of fractional distillation, diesel is extracted first, followed by gasoline as the crude is refined further.

馏过程中,先被提取,然后汽随着原的进一步精炼而被提取。

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Scishow 精选系列

Distillation, a chemical procedure used to separate liquids that have two different boiling points, uses a device called a still.

蒸馏是一种用于离具有两种不同沸点的液体的化学过程,使用的是一种叫做蒸馏器的装置。

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电影度游(LSOO)

But here's the problem: if you already have the perfect distillation of an idea, where do you go from here?

如果你已经有了一个完美的想法,接下来你该怎么做?

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英语演讲大全

I think the United States is really a distillation of the spirit of human exploration.

我觉得美国真的是人类探索精神的升华

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BBC Ideas

Distillation goes back to the ninth century when Arabian alchemists developed the alembic still.

蒸馏可以追溯到九纪,当时阿拉伯炼金术士发明了蒸馏器。

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得到头条

So - called distillation is equivalent to compression.

所谓的蒸馏相当于压缩。

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经济学人 Culture

" A succinct yet comprehensive distillation of The Economist's long-standing philosophy of language, " said MultiLingual.

MultiLingual 表示:“这是对《经济学人》长期存在的语言哲学的简洁而全面的提炼。”

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Art Theory Tutorials

Remember, there's a reason it's called a distillation study and not just a two-value study.

请记住,它被称为蒸馏研究而不仅仅是二值研究是有原因的。

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新编英语教程5

Distillation suggests essence, and we might further improve the sentence by adding this word at the beginning.

提炼暗示本质,我们可以通过在开头添加这个词来进一步改进句子。

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枪炮细菌与钢铁

As for postmedieval petroleum distillation, 19th-century chemists found the middle distillate fraction useful as fuel for oil lamps.

至于中纪后的石蒸馏19 纪的化学家发现中间馏可用作灯的燃料。

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《沙丘》有声书

She thought of the boy's features as an exquisite distillation out of random patterns—endless queues of happenstance meeting at this nexus.

她认为这个男孩的特征是从随机模式中精妙地提炼出来的——在这个联系处偶然相遇的无尽队列。

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Art Theory Tutorials

Well, you need to keep the integrity of your initial distillation intact.

那么,您需要保持初始蒸馏的完整性。

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Art Theory Tutorials

Technically, in case you are wondering, the entire distillation method of painting is just an aspect of stroke economy.

从技术上讲, 如果你想知道的话,整个绘画的蒸馏方法只是笔画经济的一个方面。

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经济学人(汇总)

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.

目前,上大部的纯氧都是通过空气的液化和之后的蒸馏得到的,并将其解成各种成

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Reel知识卷轴

This is a tribute, a distillation of what is utterly amazing about this magical, shared language, what keeps us alive, and what we live for.

这是对这种神奇的、共享的语言的致敬和升华,是它让我们得以生存,让我们为之而活。

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Art Theory Tutorials

But anyway, now that I have those lines, I can start my distillation painting.

但无论如何,既然我有了这些线条,我就可以开始我的蒸馏绘画了​​。

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