有奖纠错
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Corrosively medium for chemical production such as sodium hydrate,caustic soda,sulfuric acid,nitric acid,acetic acid,fatty acid.

化工生产品中的腐蚀性物料,如:烧碱、纯碱、浓稀硫、碳

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In addition, can add neomycin to rinse with 0.25% acetic acid or much mycetozoan element.

此外,可用0.25%或多粘菌素加新霉素冲洗。

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Firstly, p-methylacetophenone was obtained in the presence of alchlor as the catalyst, and the optimum condition was 4:1:2 in molar ratio for toluene, acetic anhydride and alchlor with yield of 86.2%.

首先,以甲苯和乙酐为原料,在催化剂三氯化铝存在下合成对甲基苯乙酮,并确定甲苯,乙酐和三氯化铝的最佳摩尔比为4: 1: 2,收率为86.2%。

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The article is about how to use phosgene and p-nitrophenylamine to react in acetic ether's liquefier to produce p-nitro-phenyl isocyanate, Its best technological condition have been discussed.

介绍用光气和对硝基苯胺在乙乙酯溶剂中反应来制备对硝基异氰苯酯的方法,并讨论了其最佳工艺条件。

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The result indicates that the main metabolic product of petroleum hydrocarbon degradation is acetic acid and surface active agent of glycolipid composed of fatty acid and rhamnose.

实验表明,微生物降解原油代谢产物主要是乙和以棕榈为主的脂肪与鼠李糖形成的糖酯类表面活性剂。

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The content of free acetic acid in cigarette smoke condensates was determined by GC-MS with isopropyl alcohol as the solvent and nonanol as the internal standard.

以异丙醇为溶剂,壬醇为内标,采用气相色谱-质谱法分析了卷烟烟气总粒相物中的游离乙,乙测定结果的相对标小于1%,平均回收率为99。

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In the presence of acetic acid and polyethylene glycol, chromic anhydride and acenaphthene react under mild condition and acenaphthene can completely convert into acenaphthenone.

、聚乙二醇存在下 ,铬酐和苊在温和的条件下反应 ,苊可以完全转化为苊酮。

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Hartshorn (NH4OH) was used as a new catalyst instead of acetic acid in the saponification reaction of base zinc salt of dioctyl thiophosphate (T203).

摘要选用氨水溶液代替作为新型催化剂用于硫磷双辛基碱性锌盐(T203)的皂化反应。

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In this paper,1 acetylaminoanthraquinone was synthesized by using 1 aminoanthraquinone and acetic anhydride as starting materials and by using acetic acid as solvent.

本文以1氨基蒽醌和乙酐为原料,乙作溶剂,合成了1乙酰氨基蒽醌。

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The rearrangement of acetone oxime in the Beckmann solution involves three acetic acid molecules and one proton (present as an oxonium ion).

模拟表明,有三个乙分子和一个质子(以氧鎓的形式纯在)参与了反应。

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Since the acetic acid bacteria are known to be aerobic, sample A without the oxygen consequently produced no vinegar and no zoogloea.

因为悉知菌熟是需氧的,标本A没有氧因此不产生和没有细菌胶团。

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The test for treatment of waste water from acetic acid and acetic anhydride production by using anaerobic digestion-aerophile biochemical method is described.

介绍对酐生产中的有机废水采用厌氧好氧生化处理方法的试验。

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In the liquor of acetic acid,the catalyzed synthesis of m-chlorobenzoic acid by the reaction of m-chlorobenzal dehyde and potassium bromate was studied.

溶液中,以间氯苯甲醛、溴钾为原料合成间氯苯甲,分别研究了反应温度、反应时间、原料配比、溶剂的用量条件对合成反应的影响,确定了最佳工艺条件。

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The stability,decomposition and generation of the acetic acid halid and other organic halide in the treated water is briefly discussed.

简述了生成的卤化乙和其它有机卤化物的稳定性及分解、生成问题.

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Ethylene glycol monoether acetate are synthesized from acetic acid and ethylene glycol monoethyl ether with supported phosphotungstic acid catalyst.

和乙二醇单乙醚为原料,活性白土负载磷钨作为催化剂,合成了乙二醇单乙醚酯。

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Methods The eyeballs of rat were fixed in the improved fixative solution mixed with paraform,glacial acetic acid and acetone.

方法将大鼠眼球投入到由多聚甲醛、冰和丙酮组成的改良固定液中固定后制成石蜡切片,经HE染色后在显微镜下观察。

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By the improved method, proglumide was synthesized in acetic anhydride with toluene as the dehydrating agent.

本文报道合成抗溃疡药丙谷胺的改进工艺。

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WIL生活启示录

After serotonin is pumped into the synapse, it is either taken up into the pre-synaptic neuron for later use or it is metabolized by an enzyme into 5-hydroxyindole acetic acid (5-HIAA).

5-色胺被“泵”入神经突触后,要么被带到前突触神经元备用,要么被某种酶代谢 5-吲哚乙酸(5-HIAA)。

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双语版 TED-Ed 演讲精选

There, it's converted to another molecule, called acetic acid, in a special type of reactor that produces an electric current during the reaction.

在那里,它在一种特殊的反应器中转化为另一种分子,称为乙酸,在反应过程中会产生电流。

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Scishow 精选系列

A weak acid, acetic acid for example, which is just the undiluted form of vinegar will drag its feet about protonating other molecules.

弱酸,比酸,只是一种未稀释的,它在质子化别的分子时显得非常艰难。

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科学60秒-科学美国人 2019年8月合集

So basically the vinegar you use in your home is diluted acetic acid.

所以,你在家里用的本上就是稀释的酸。

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Scishow 精选系列

That's because bacteria get into it that convert ethanol to acetic acid, the molecular flavor of vinegar.

那是因为细菌进入其中,将乙醇转化为酸,这是的分子味道。

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科学60秒-科学美国人 2019年8月合集

Acetic acid is mainly used for the manufacture of paint and adhesives. It is also used for the manufacture of vinegar.

酸主要用于制造油漆和粘合剂。同时也被用来制造食

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SciShow - Chemistry

The pigment was made by mixing metallic lead with acetic acid -- also known as vinegar -- in the presence of carbon dioxide to make lead carbonate, a powdery white lead.

这种颜料是通过将金属铅与酸混合——也就是——在二氧化碳的存在下制碳酸铅,一种粉末状的白色铅。

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Crash Course 综合

For example, when weak acid like acetic acid is added to water, a tiny fraction of it dissociates in to its constituent ions: acetate and hydrogen ions, or protons.

, 当将乙酸等弱酸加入水中时,其中的一小部分会离解其组离子:乙酸根离子和氢离子或质子。

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On Purpose with Jay Shetty

And acetic acid, when you have some before a meal, is going to slow down how quickly food breaks down into glucose in your body.

而在餐前摄入一些酸,可以减缓食物在体内分解葡萄糖的速度。

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经济学人 Science and technology

Folk medicine says that when you boil it, the acetic acid-rich fumes clear the air of whatever nastiness is bringing on the cough.

民间医学认为, 当你煮时,富含酸的蒸汽能净化空气中的致咳病菌。

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透视百科健康类

Research does suggest that acetic acid can slow down the accumulation of body fat and prevent metabolic disorders in mice and rats.

研究确实表明,乙酸可以减缓小鼠和大鼠体内脂肪的积累,并预防代谢紊乱。

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化学 Crash Course

So use the equilibrium expression for acetic acid, and put in the Ka, and the equilibrium concentrations from the RICE table.

所以使用酸的平衡表达式,代入Ka值以及RICE表中的平衡浓度。

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TED-Ed(视频版)

Another type of bacteria, called acetic acid bacteria, isn't so desirable in wine, but they have their function, too.

另一种细菌,称为酸菌,在葡萄酒中并不受欢迎,但它们也有其作用。

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朗文OCLM-01单词

Acetic acid is the chief active ingredient in vinegar.

【ingredient】酸是的主要有效分。

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SciSHow 快问快答小科普

These bacteria break down sugars into chemicals like lactic acid and acetic acid, giving sourdough its signature tartness.

这些细菌将糖分解乳酸和乙酸等化学物质,使酸面团具有标志性的酸味。

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Crash Course 综合

Simultaneously increasing the acetic acid concentration by 0.01 moles per liter.

同时将乙酸浓度增加 0. 01 摩尔/升。

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On Purpose with Jay Shetty

OK, so vinegar contains a wonderful molecule called acetic acid.

好的,所以含有一种叫做酸的神奇分子。

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博兹曼科学——化学

So if we look at acetic acid, in this case it's donating a proton to water.

果我们观察乙酸,在这种情况下它会向水捐献一个质子。

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化学 Crash Course

Now, Acetic acid is also interesting because once upon a time, a clever chemist called Leopold Gmelin did some chemistry and knocked off the OH group and joined the carbonyl with another carbon.

现在,乙酸也很有趣, 因为很久以前,一位名叫利奥波德·格梅林的聪明化学家做了一些化学实验, 去掉了, 并将羰与另一个碳原子连接起来。

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透视百科健康类

Yeast turns the sugars in apple juice into alcohol, and bacteria then turns that alcohol into acetic acid, the chemical linked to most of cider vinegar's alleged benefits.

酵母将苹果汁中的糖转化为酒精,然后细菌再将这种酒精转化为乙酸,这种化学物质与大多数苹果声称的好处有关。

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