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Benzylidene acetone exports accounted for first in the country.

苄叉丙酮的出口量占全国第一。

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Dimethyl dioxirane was prepared with potassium monoperoxy sulfate and acetone.

通过过一硫酸和丙酮反应,合成了新型高效的氧化剂二甲二氧环烷。

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The freshly abraded specimen must then be washed in industrial spirit and Analar acetone.

然后,研磨好的新鲜试样必须在工业酒精及纯丙酮洗涤。

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Benzaldehyde and acetone used as materials,the benzylidene acetone is synthesized in the presence of potassium fluoride on alumina.

以苯甲醛和丙酮为原料,氟化钾氧化铝作催化剂合成了苄叉丙酮。

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It dissolves in hot grease, paraffine, ethanol, chloroform, acetone and aether, but is insoluble in water.

该产品不水,油脂、石蜡、乙醇、氯仿、丙酮、乙醚。

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

方法将大鼠眼球投到由多聚甲醛、冰醋酸和丙酮组成的改良后制成石蜡切片,经HE染色后在显微镜下观察。

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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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Xanthoxylin was extracted from Zanthoxylum Bungeanum Maxim of Sichuan Hanyuan using absolute ethyl alcohol, ether, acetone and water as solvent.

采用无水乙醇、乙醚、丙酮及水作剂,对四川汉源花椒作了精油提取研究。

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Isopropenyl acetate was synthesized from ketene and acetone by direct esterification using strong acidic cation-exchange resin to substitute H2SO4 as catalyst.

以乙烯酮和丙酮为原料,用强酸性离子交换树脂代替浓硫酸作为催化剂,直接酯化合成乙酰丙酮的间体乙酸异丙烯酯。

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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,有三个乙酸分子和一个质子(以氧鎓的形式纯在)参与了反应。

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However, other solvents, such as acetone and trichlorotrifluoroethane, were not and the procedure was adequate for recovering a known inoculum of spores.

不过其他剂(如丙酮和三氯三氟乙烷)就不会,操作适用回收孢子接种物。

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In this paper we studied the simple history,principle,process and selective method of carrier and medium of production of acetone and butanol with fermentive method of clostridium aceto-butylicum.

本文研究了丙丁菌发酵法生产丙酮和丁醇的简史、原理、过程,以及载体和培养基的选择方法。

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(Sweet legumin of 2) heparin and benzyl acetone: Can improve Gao Ning position of blood, and prevent kidney spherule sclerosis and new moon bodily form to become.

( 2)肝素与苄丙酮香豆素:可以改善血液的高凝状态,而防止肾小球硬化及新月体形成。

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The release patterns of norgestrel in NRID in vivo were simulated after the norgestrel in NRID was dissolved by acetone and the rest of norgestre was determined by Ultraviolet Ray Spectrometer.

在实验室用丙酮解,并用紫外线分光光度仪测每枚NRID内炔诺酮剩余量,计算每枚NRID内炔诺酮释放量,模拟分析NRID主成分炔诺酮在山羊体内的释放规律。

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But as for his original quest, removing acetone from nail salons?

但是,至于最初的疑问,去除美甲沙龙里的丙酮?

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经济人-

It has already identified glycolaldehyde and acetone, molecules that have eight and ten atoms respectively.

它已经鉴定出了乙醇醛(8原子分子)和丙酮(10原子分子)。

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VOA Standard 2015年1月合集

And the sweet smell is this particular ketone that is given out; it's called acetone.

甜香味尤其是这种酮所散发出,它的名是丙酮。

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For example, with acetone, they can use a mix of petroleum and wintergreen oil.

如,对于丙酮而言,他们可以使用石油和冬青油的合物。

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Small amounts of acetone are also naturally found in your blood and urine.

血液和尿液中也会发现少量丙酮。

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揭秘

There are some other gases in the air too, including methane, acetone, methel alcohol and carbon monoxide.

空气中还有其他一些气体,包括甲烷、丙酮、甲醇和一氧化碳。

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Then, they also have to remove the acetone residue, so it doesn't keep dissolving the original paint.

然后,他们还必须去除丙酮残留物,这样它就不会一直溶解原始油漆。

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And, at high concentrations, acetone can cause skin rashes and irritation.

高浓度的丙酮会引起皮疹和刺激。

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You might know acetone as the active ingredient in nail polish remover and paint thinner.

你可能知道丙酮是指甲油去除剂和油漆稀释剂的活性成分。

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But your body also makes acetone when you're desperately in need of energy.

但是当你迫切需要能量时,你的身体也会产生丙酮。

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可汗院:生物化

So acetone is a relatively polar molecule.

所以丙酮是一种相对极性的分子。

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One of those compounds is acetoacetate, which can break down further into acetone.

其中一种化合物是乙酰乙酸酯,它可以进一步分解成丙酮。

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可汗院:生物化

The same thing happens to this acetone molecule down here.

下面的丙酮分子也发生了同样的事情。

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Crash Course

He named that stuff 'acetone', meaning basically 'derived from Acetic acid'.

他将这种物质命名为“丙酮”,意思基本上是“源自乙酸”。

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可汗院:生物化

And therefore, acetone is still a liquid.

因此,丙酮仍然是液体。

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Acetone, nail polish remover, causes mild nervous system effects.

轻微的神经统影响身体。

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Crash Course

Now, acetone is just a name of that one chemical, not the functional group itself.

现在,丙酮只是一种化物质的名称,而不是官能团本身。

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可汗院:生物化

So at room temperature and pressure, acetone is a liquid.

所以在室温和压力下,丙酮是液体。

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First, they'll slowly wipe away the old varnish using a chemical like acetone, a carbon-based molecule that's great at dissolving resin.

首先,他们会用丙酮等化物质慢慢擦掉旧清漆,丙酮是一种碳基分子,非常擅长溶解树脂。

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But mostly, you just get rid of extra acetone in your urine.

但最重要的是,你只需清除尿液中多余的丙酮。

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