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A catalyst is a substance which speeds up a chemical reaction.

是一种能加速学反应的物质。

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Resinification of furfural on the catalyst was the main cause of deactivation.

结焦是导致失活的主要原因。

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Propylene glycol monoether acetate was synthesized using heteropoly acid as catalyst for the firsttime.

首次以杂多酸为采用酯法合成丙二醇单乙醚乙酸酯。

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We imagine using an anticatalyst to "freeze out" any chemical reactions in the system.

可想象利用一种反使体系内的任意学反应“冻结”。

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CuFe-PILC catalyst was prepared by doping technology during the preparation process of pillaring agent.

在此基础上对其进行掺杂改性,获了铜铁复合层柱粘土

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Synthesis of n-butyl lactate is catalyzed by phosphotungstic acid and aluminium phosphotungstate.

以磷钨酸和磷钨酸铝为,用乳酸和正丁酸合成了乳酸正丁酯。

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Its catalytic performance in Heck reaction of iodobenzene with ethyl acrylate was studied.

研究了该对碘代苯与丙烯酸乙酯反应的性能及循环使用性能。

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The synthesis of nerolin bromelia by use of various phase transfer catalysts at different conditionsis studied.

研究了利用多种相转在不同条件下合成橙花素。

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N,N-diethylaniline was synthesized under normal tempreture with tetraethyl ammonium hydroxide as phase transfer catalyst.

以苯胺和溴乙烷为原料,用四乙基氢氧铵作相转,在常压下合成N,N二乙基苯胺。

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The best reaction condition are determined when synthesizing dibutyl maleate by using sloid chloride as catalyst.

提出了以固体氯物为合成马来酸二丁酯的最佳反应条件。

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Aluminum propoxide for the Tishchenko condensation of propanal to propyl propionate is prepared from aluminum powder and propanol.

以合成出的丙醇铝为,无水氯锌为助,用丙一步合成了丙酸丙酯,收率可达92%,选择性可达93%。

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Fe-only hydrogenase can catalyze the reversible reaction of protons and electrons to molecular hydrogen in nature.

对铁氢酶活性中心进行学模拟将有可能产生出新型的产氢

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The performance of this catalyst for the cross-coupling reaction of iodobenzene with acrylic acid was studied.

研究了该对碘代苯与丙烯酸交叉偶联生成反式-肉桂酸的性能。

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The hydrogenation of terpineol to dihydroterpineol catalyzed by Raney Nickel modified by potassium borohydride was studied.

研究了以硼氢钾修饰的雷尼镍松油醇加氢制备二氢松油醇的反应。

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By using phase transfer catalyst, the yield of the preparation of cyclopropane carboxylic isopropyl ester was increased.

在环丙甲酸异丙酯的合成反应中,通过相转提高了反应收率。

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Nitrodiphenylamine is synthesiized by direct condensing method,adsopting aniline and 2-nitrochlorobenzene as feeds,PEG as phase transfer catalyst.

以苯胺、邻硝基氯苯为原料,采用直接缩合法引入相转合成邻硝基二苯胺。

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Synthesis of ethyl iso nicotinate using BTEAC (benzyl triethyl ammonium chloride) as phase transfer catalyst was studied.

以BTEAC(苄基三乙基氯铵)为相转合成了异烟酸乙酯。

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The catalytic system formed from polymer-supported neodymium complexes shows high catalytic activity and stereospecificity for butadiene polymerization.

聚合物载体-钕络合物具有很高的活性和定向效应.

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The fuberidazole was prepared by reaction of O-phenylendiamine with furfural at the presence of CTMABas catalyst.

以邻苯二胺和糠为原料,以十六甲基三烷基溴铵(CTMAB)为合成了麦穗宁。

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Qualified nickelous, sulfate, nickelous nitrate and nikel monoxide were prepared with waste raney nickel catalyst as raw material.

以废雷尼镍为原料,制备出合格的硫酸镍、硝酸镍和氧镍。

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cantrip, cantus, cantus firmus, canty, Canuck, Canucks, canula, canular, canulate, Canute,

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3G, 401(K), a,

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经典英语美文背诵100篇

Leadership is the catalyst for transforming those talents into results.

领导艺 是一种,将众人的才智转为业绩。

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现代大学英语精读(第2版)第三册

Every supervisor is a catalyst to motivation.

每位管理者都是动机的

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Lost Girl S02

Killing the Ash is just the catalyst.

杀阿什只是一个

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CNN 精选 2016年3月合集

It's also the catalyst for El Nino rainstorms.

这也是厄尔尼诺暴雨的

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中高级英语短文

But there was one problem with using copper as a catalyst.

但是使用铜作为有一个问题。

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经济学人-文艺

The catalyst? A single Silicon Valley executive.

(这场论的)是一位硅谷的主管。

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侏罗纪搏击俱乐部

It appears that global climate change was the catalyst.

看起来全球气候变

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VOA常速英语(视频版)- 2023年合集

We use a catalyst and we then start to knock off these fluorine atoms.

我们使用,然后开始分解这些氟原子。

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VOA常速英语_美洲

The 2016 Election was kind of the catalyst.

2016年的选举在某种程度上是

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英语世界

The U.S. space program has been an extraordinary catalyst for technology innovation.

美国的航天计划一直是新极佳的

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彭博洞察

Which brings us to a catalyst behind Nvidia's recent extraordinary rise.

这让我们看到了英伟达近期非凡崛起背后的

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如何避免气候灾难

In science, a catalyst is a substance that accelerates a chemical reaction.

在科学中,是一种加速学反应的物质。

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2021诺贝尔得主访谈录

And also, with the catalyst, we reduce the amount of chemical waste that is produced.

而且,有了,我们减少了产生的学废物。

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VOA常速英语_美洲

It might be a most unfortunate catalyst for good change.

这可能是一个最不幸的,会带来良好的变

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NPR音讯 2018年4月合集

Was it a catalyst? What has changed since then, since 2012?

那成为了吗?2012年之后,发生了哪些变

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火星救援 原声版

If I run the hydrazine over an iridium catalyst, it'll separate into N2 and H2.

假如我用铱分解联氨,它将分解成氮气和氢气。

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奇思妙想物语

None of us can be the Overman, but we can be the catalyst for it.

我们没有人可以成为超人,但我们可以成为变成他的

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Crash Course 解剖生理学篇

Enzymes are proteins that living things use as catalysts, to speed up chemical reactions.

酶是生物用作的蛋白质,以加速学反应。

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简单心理学

The big takeaway is that Valentine's Day isn't a breakup instigator, it's a catalyst.

最大的收获是情人节不是分手的煽动物,而是一种

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VOA慢速英语_科

A catalyst is a substance that permits certain chemical reactions to happen.

是一种允许某些学反应发生的物质。

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Cap., capa, cap-a&2&-pie, capability, capable, capable of, capably, CAPAC, capacidin, capacious,

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3G, 401(K), a,
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