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This proved that nitrourea was a more suitable reactant than urea to synthesize Keto-RDX.

由此表明了在生成RDX酮的反应过程中,硝基脲上比脲更为合适的反应形式。

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The soy sauce containing urea will become red when heated together with diacetyldioxime and phosphoric acid.

掺有尿素的酱油在与丁二酮肟、磷酸混合后,加热煮沸会呈现红色。

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Since various, cause has not given a test to maneb zinc supersession thing second braces sulfurs urea (ETU).

由于各种原因未对代森锰锌的代谢物脲(ETU)

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Cross-linking agent glycoluril with a yield of 61.8% had been synthesized by employing urea and glyexal as reactants,and hydrochloric acid as catalysts.

尿素和二醛为原料,在酸催化的条件下合成了甘脲,产率为61.8%。

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High-grade filling and retanning agent CDF was prepared by condensation polymerization reaction of urea,cyanuramide and dicyandimide.The property and application of the product were discussed.

本文主要论述了用脲、双氰胺、三聚氰胺等原料经缩聚反应制备填充复鞣剂CDF的方法及其性能与应用。

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This paper presents the studies on the reaction form of urea or nitrourea which condenses with nitrolysis fragments of urotropine to form Keto-RDX in nitrating agents.

通过改变加料方式来研究脲或硝基脲在硝化剂中与乌洛托品硝解碎片行缩合反应的形式。

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A kind of monosubstituted squaric amide ——mono carbamoyl amide of squaric acid 3(MCASAQ) was prepared by the condensation of squaric acid (SQ) with urea or its derivatives in water.

水为介质,方酸与脲及其衍生物顺利发生脱水缩合,合成了一类方酸单酰胺化合物——氨甲酰类氮氧方酸3。

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Methods Compounded one kind of trisaccharide iron urea indol culture medium and the trisaccharide iron agar has carried on the contrast experiment with the national standard method in voluntarily.

方法自行配制了一种三糖铁尿素靛基质培养基,并与国家标准方法中三糖铁琼脂行了对比试验。

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Mainly, urea and uric acid producing even more ammonia.

同时素和酸会产更多的氨。

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NPR音讯 2015年10月合集

Those cars don't have the urea tank right now.

这些车辆现在没有安装

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Osmosis-

So, with Klebsiella, urease makes urea dissociate into carbon dioxide and ammonia.

肺炎克雷伯杆菌产的脲酶使得素分解成二氧化碳和氨。

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PBS趣味科普

Using a special enzyme, they stuff urea — another nitrogen containing compound — into their tissues.

它们使用种特殊的酶,它们向组织填装素 ——另种含氮化合物。

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级英语短文

The fatty acids, urea, uric acid and lactate in the sebaceous film protect and hydrate the skin.

皮脂膜的脂肪酸、素、酸和乳酸对皮肤有着保护和滋润作用。

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Osmosis-

So, with Staph saprophyticus, urease makes urea dissociate into carbon dioxide and ammonia.

葡萄球菌的脲酶可使素分解为二氧化碳和氨气。

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SciShow 合集

So, if you’re eating a high-salt diet, your body responds by making more urea.

所以,如果你吃的是高盐饮食,你的身体会产更多的素。

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魔鬼经济学

Some of it we use to make urea.

些我们用来制造素。

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透视百科健康类

Adding to your trouble is urea.

素会给你带来更多麻烦。

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科学报

They made a cement from urea and faux lunar soil.

他们用素和人造月球土壤制成了水泥。

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初来乍到(第二季)

And be sure to use fertilizer without urea.

定不要用含素的肥料。

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PBS人体科学

Using a special enzyme, they stuff urea–another nitrogen containing compound–into their tissues.

使用种特殊的酶,它们将素——另种含氮化合物——填充到它们的组织

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科学报

They bought their urea from a chemical supply company.

他们从家化学品供应公司购买素。

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SciSHow 快问快答小科普

Pee and sweat for example both contain urea, a molecule with two ammonia like parts.

例如, 液和汗液都含有素,这是种含有两个类似氨的部分的分子。

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科学报

Her team mixed that powder with powdered urea.

她的团队将这种粉末与素粉混合。

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科学报

But overall, she says, making cement with urea on the moon could be practical.

但总的来说, 她说,在月球上用素制造水泥是可行的。

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2017级专外有声

They do this by separating urea, mineral salts, toxins, and other waste products from the blood.

它们通过从血液分离素、矿物盐、毒素和他废物来达到这目的。

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Scishow 精选系列

But when he accidentally made urea instead, scientists began to think maybe living things weren't so chemically different from non-living things.

但是当他不小心制造出素时,科学家们开始认为也许物和非物在化学上并没有太大不同。

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SciSHow 快问快答小科普

When urea comes in contact with chlorine, it swaps out its hydrogens for chlorine, and voila, chloramine is born.

素与氯接触时, 它会将氢换成氯,瞧,氯胺就诞了。

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Life Noggin

Sweat is made of water, sodium, urea, ammonia and a few other things, but sweat itself doesn't actually smell.

汗液由水、钠、素、氨和些物质组成,但汗液本身实际上并没有气味。

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