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Carbon tetrabromide was prepared from acetone and sodium hypobromite by adding tetrabutylammonium bromide.The yield and purity were very satisfactory.

向次溴酸钠溶液中滴加适量的丙酮,在四丁基溴化铵催化下,高产率得到四溴化碳。

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The phenols were O-alkylated with 100% conversion and 100% selectivities using phenacyl bromide and benzyl bromide as alkylating reagents.

用溴代苯乙酮和溴苄为基化试剂,以高产率和100%的转化率以及100%的选择性得到了酚的O-基化产物。

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Trimethylaluminum(TMA),usually used in organic catalysis and organic synthesis,was synthesized by reaction of triethylaluminium (TEA) with methyl bromide on iron-stibonium complex catalyst.

用新的催化体系(铁-锑复催化剂)催化三乙基铝(TEA)与溴甲换反三甲基铝(TMA)。

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TEM, ethidium bromide displacement assays, agarose gel electrophoresis and SAXS studies support the formation of lipoplexes for the transfection of CHO cells.

【文献摘要】A new transfection reagent based on nucleoside phosphocholine amphiphile leading to high transfection efficacy and low cytotoxicity is described.

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119.0 g of cyclopentyl bromide and 19.4 g of magnesium are reacted in ether or THF to give a cyclopentyl Grignard reagent.

119克环戊和19.4克镁在空气中或者四氢呋喃中加入环戊格林尼亚试剂作发生反

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Methods Infrared spectrophotometry with potassium bromide tabletting was adopted,in which the extract was carried out with the absolute alcohol as the solvent.

方法以无水乙醇为溶剂提取,采用红外分光光度法(溴化钾压片)定性鉴别。

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Using 2-acetyl benzimidazole and sodium bromide as raw material,2-(dibromine acetyl)-benzimidazole hydrobromate was synthesized with the new bromine that displaced by chlorine gas in light.

以2-乙酰基苯并咪唑和溴化钠为原料,在光照条件下用氯气置换出溴化钠中的溴素,兽药噻苯咪唑中间体-2-(二溴乙酰基)-苯并咪唑氢溴酸盐。

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Bromobutyraldehyde ethylene acetal was synthesized from crotonaldehyde by addition with hydrogen bromide and then acetalation with ethylene glycol with an overall yield of 80.

巴豆醛先与溴化氢加,再与乙二醇缩醛化得到3-溴代丁醛缩乙二醇,收率80.8%。

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The cocktail used generally contains sodium thiopental (to anaesthetise the condemned man), pancuronium bromide (to paralyse his muscles) and potassium chloride (to stop his heart).

一般注射用的混针剂含有硫喷妥钠(麻醉犯人),泮库(麻痹犯人肌肉)和氯化钾(停止犯人心跳)。

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By 52%-54% denisty indicator of lithium bromide, it is used to be absorptive refrigerant, hypnagogue and mitigative of medicine, and also to be electrolyte in ion-battery.

52%-54%浓度的溴化锂用作吸收式制冷剂。在医药中,用作催眠剂和镇静剂。还用作锂电池的电解质。

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The paper studied the preparation of bromine from basic Magnesium bromide in the production of maltol and ethyl maltol, the synthesis of bromethyl from bromine, sulfur and alcothol.

研究了以麦芽、乙基麦芽酚生产中的碱式溴化镁废渣为原料制取溴;以溴、硫和乙醇溴乙的方法。

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Through the research on petroleum and nature gas, design a multi-source heatpump of single and double effect lithium bromide, the two stage heatpump unit, process of nature gas liquefaction etc.

通过对石油天然气物性的研究,利用热泵机组的特点,设计多源单效制冷供热热泵机组、双效热泵机组、双级热泵机组及天然气液化流程。

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There's still plenty of silver bromide left over, though.

但仍有很多溴化银存在。

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福尔摩斯基本演绎法第二季

I've got nothing to offer the man other than a few banal bromides.

除了那些陈词滥调,我什么都说不了。

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博兹曼科——化

If we compare that to the silver bromide, what's our Ksp value here?

如果我们将其与溴化银进行比较,这里 Ksp 值是多少?

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斯泰尔斯庄园奇案

Mrs. Inglethorp had a box of bromide powders, which she occasionally took at night.

英格里桑夫人有一盒溴化物粉末, 她偶尔会在晚上服用。

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博兹曼科——化

What do you think is going to happen when we make sodium bromide?

您认为当我们制造溴化钠时会发生什么?

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Frigate Pallada

Civilizing bromides alternate in Goncharov's book with wholly self-interested considerations of raw power and profit.

在冈察洛夫书中,文明溴化物与对原始权利润完全自私考虑交替出现。

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博兹曼科——化

So now we've got silver bromide.

现在我们得到了溴化银。

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经济人 Books and arts

He advocates are more far-reaching than the usual bromides about putting country above party or bipartisan hobnobbing in Washington Instead.

主张比通常那些关于将国家利益置于党派之上或在华盛顿进行两党交要深远得多。

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纽约时报 (New York Times)

It is a bipartisan bromide: In his November 2016 victory speech, Donald Trump promised to " harness the creative talents of our people."

2016年11月胜选演讲中,唐纳德·特朗普就承诺“发挥我们人民创造性才能”。

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秘密花园(原版)

" If it amuses you perhaps it won't do you any harm. Did you take your bromide last night, Colin" ?

“如果它能让你开心,也许它不会对你造成任何伤害。你昨晚服用溴化物了吗,科林”?

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Crash Course

For instance, partial charges occur in hydrogen bromide because the electrons are more attracted to the bromide than they are to the hydrogen.

例如,部分电荷出现在溴化氢中,因为电子更容易被溴化物吸引, 而不是被氢吸引。

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研究生综合教程下

This fledgling field has already proved the truth of what once passed as bromide: What doesn't kill you can actually make you stronger.

大难不死,意志弥坚。

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斯泰尔斯庄园奇案

Anyway, she was familiar with the fact that the addition of a bromide to a mixture containing strychnine would cause the precipitation of the latter.

不管怎样,她很清楚在含有士混合物中加入溴化物会导致后者沉淀。

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But the researchers were able to make rubber self-heal by replacing the sulfur in the rubber with a pair of charged molecules, or ions, called butyl imidazolium and bromide.

但是,研究人员可以通过成对带电分子或离子替换其中硫磺使这些橡胶自行修复,叫做丁基咪唑鎓盐溴化物

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Scishow 精选系列

Butyl imidazolium has a positive charge, and it's always accompanied by a negatively charged bromide, just like the ions of sodium and chloride that you find in table salt.

丁基咪唑鎓盐拥有正电荷,总是伴随着一个负电荷溴化物,就像盐粒中钠离子氯离子。

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Scishow 精选系列

When a photon hits a crystal of silver bromide on a film strip, for instance, it knocks an electron off a negatively-charged bromide ion to create an atom of bromine.

例如,光子撞击胶卷表面溴化银晶体时,从带负电溴离子上“敲掉”一个电子,生成一个溴原子。

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TED-Ed(视频版)

Physicians like Sir Charles Locock hypothesized that sedative drugs might calm overactive brain activity, a theory he confirmed by treating seizures with a medication called potassium bromide.

像查尔斯·洛克克爵士这样医生假设镇静药物可能会平息过度活跃大脑活动,他通过使用一种叫做溴化钾药物治疗癫痫发作证实了这一理论。

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时代周刊 (Time)

PRESIDENT TRUMP DELIVERED A fairly traditional mix of barbs and bromides during his 80-minute State of the Union address on Jan. 30, but one seemingly anodyne claim was actually pretty audacious.

在1月30日发表80分钟国情咨文演讲,总统特朗普继续走了冷嘲热讽陈词滥调老路,然而,其中一个看似平平无奇主张实上是非常大胆

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A Promised Land

With few exceptions, everything I observed about politicians seemed dubious: the blow-dried hair, the wolfish grins, the bromides and self-peddling on TV while behind closed doors they curried the favor of corporations and other monied interests.

除了少数例外,我观察到关于政客一切似乎都可疑:吹干头发、狼一样笑容、溴化物在电视上自我兜售,而他们却在闭门造车地讨好公司其他金钱利益集团。

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研究生英语综合教程

This fledgling field has already proved the truth of what once passed as bromide

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