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Cu furaldehyde-ethylene diamine Schiff base complex was synthesized with the yield of 63.

合成了一种席夫碱金属络合物——呋喃甲醛乙二胺铜络合物,收率为63。

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A new curing agent was synthesized by the reaction of phenylamine-formaldehyde and dicyanodiamide.

利用苯胺-甲醛与双氰胺反应得到了一种改性产物。

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Moreover, the characteristics and the main applied fields of polyacetal resin were presented.

并介绍了聚甲醛树脂的特性和主要应用领域。

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Formaldehyde, benzene, ammonia and radioactive pollution' superscale have seriously affected people's health.

甲醛、苯、氨气和放射性标已经严重影响了人们的健康。

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Nefedipine was synthesized with m-Nitrobenzaldehyde,ethyl acetoacetate,ammonium acetate.

以间硝基苯甲醛,乙酰乙酸乙酯,氨为原料。

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The absorption spectroscopic determination of aucubin by condensation with p-dimethylaminobenzaldehyde was optimized in this paper.

采用均匀设计法对对二甲氨基苯甲醛显色法测定桃叶珊瑚甙的显色条件行了优

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A reaction engineering analysis was given to a trioxane synthesis reactorssuggested by BASF company.

对德国BASF公司提出的三聚甲醛合成反应器行了工程分析。

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A foamable phenolic resin was prepared,through addition,condensation,in the presence of alkali.The resin was foamed with surfactant, foamer,solidifying agent , then the foam phenolplast was given .

苯酚与甲醛在碱性条件下经加成、缩合制得可发性酚醛树脂,该树脂和表面活性、发泡一起发泡即得酚醛泡沫塑料。

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The scale up test for the synthesis of melamine melocol resin was accomplished on the basis of the technological conditions adopted in the former pilot test.

以密胺-脲甲醛树脂合成的小试工艺条件为依据,完成了放大试验过程的工艺研究。

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Overseas research progress of new process for synthesis glycerol from formaldehyde is introduced. Close relationship of the technology yielding with formose technique is reviewed.

介绍国外甲醛制甘油新工艺的研究展,阐述了该技术的产生与甲醛聚糖技术的密切关系。

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The effects of reactant ratio, reaction time, catalyst amount,the species and amount of deaquation reagent on the yield of benzaldehyde 1,3-butanediol acetal were investigated.

对苯甲醛与1,3-丁二醇在钒磷氧催作用下的缩醛反应行了研究,考察了醇醛比、反应时间、催用量、带水种类和体积等因素对苯甲醛1,3-丁二醇缩醛收率的影响。

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In this paper, the PVA of major component in the Sensitized emulsion was modified by the polyreaction with formaldehyde, butyl aldehyde, furfural and alcohol.

甲醛、丁醛、糠醛对重氮感光胶中的主要成分聚乙烯醇行改性,以增强感光胶的耐水性和耐磨性。

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1,3,5-trioxane is an important chemical used primarily as a monomer for the production of high-molecular weight polyacetals and secondarily as a chemical intermediate.

三聚甲醛是一种重要的工产品,主要用作生产聚甲醛工程塑料的单体,也用作工中间体。

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Objective: To compare the clinical effects of calcium hydroxide iodoform (CHI) slurry and traditional intracanal medication such as formocresol (FC), camphophenic (CP).

比较氢氧钙碘仿(CHI)糊与传统的根管消毒甲醛甲酚(FC)、樟脑酚(CP)的临床效果。

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This paper describes a new technology for production of rongalite based on sodium pyrosulfite reduced by zinc powder and reacted with formaldehyde.

斜述了用焦亚硫酸钠为原料,经锌粉还原与甲醛加成反应,生产次硫酸氢钠甲醛的新工艺。

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Result The top 5 chemical allergic resources of these patients were 0.1% thiomersalate, 5% nickel sulfate,7% aromatic compound,1% formaldehyde( water solution),1% styrene.

结果居常见致敏原前5位的学物质分别是0.1%硫柳汞、5%硫酸镍、7%芳香混和物、1%甲醛(水溶液)、1%肉桂醇。

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Say in findings report, the chemical contaminant that exists generally in French household is acerbity salt of formaldehyde, aldehyde, phthalein and DDVP.

调查报告中说,在法国家居中普遍存在的物是甲醛、乙醛、酞酸盐和敌敌畏。

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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.

在醋酸溶液中,以间氯苯甲醛、溴酸钾为原料合成间氯苯甲酸,分别研究了反应温度、反应时间、原料配比、溶的用量等条件对合成反应的影响,确定了最佳工艺条件。

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Four kinds of methods to synthesize o-Dichlorobenzaldehyde were introduced. the advantages of hydrolysis methods to reduce p-toluene sulfonyl chloride were discussed.

主要介绍了四种二氯苯甲醛的合成工艺路线,并比较利弊,阐述了对甲苯磺酰氯氯水解法的优越性。

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Glycoluril prepared under optimized process conditions has the following good properties of low content of free formaldehyde,durable and stable and crease-proofing.

用优的工艺条件制备的甘脲树脂,具有游离甲醛含量低、耐久定型、抗折皱的优良性能。

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CNN 10 学生英语 2017年11月合集

Borax and formaldehyde were packed with meat to make it appear fresher.

硼砂和添加到肉里可以让肉看起来很新鲜。

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科普小杂文

If acetaldehyde sounds familiar that maybe because it's similar to formaldehyde. It's toxic. That's why it triggers the immune responds.

你可能觉得乙醇似曾相识,那是因为他和一样,有毒。这就是为什么我们的免疫系统会产生反应。

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CNN 10 学生英语 2017年11月合集

Until about 1902, legal food preservatives included chemicals like formaldehyde, borax and copper sulfate.

在1902年以前合法的食品添加剂还包括,硼砂和硫酸铜。

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连线杂志

Every prep room is going to have ventilation, it's going to have formaldehyde level monitoring.

每个准备室都要通风,都要监测水平。

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经济学人-文艺

This includes two “still lives” which flicker between poignancy and irony: “Away from the Flock” (1994), a white sheep suspended in a tank of formaldehyde, and “Mother and Child Divided” (1993), a cow and calf split between four tanks.

这六件作品中包括两件介于辛酸和讽刺之间的《静寂的生命》,分别是《远离羊群》(1994年),一只泡在中的羊, 以分离》(1993),在四个间切开的牛和牛犊。

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《分钟地球》趣味科普(精选双语)

It's a critical ingredient in some common vaccines, like those for tetanus and influenza, because it alters the structure of those pathogens just enough to render them harmless.

在一些常见的疫苗中,是个关键性的成份,譬如在破伤风疫苗和一些流感疫苗中,因为可以改变那些病原体的结构,足以使其无害。

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Osmosis-精神心理

Finally, the cigarette smoke has a lot of different carcinogens, including ammonia, formaldehyde, carbon monoxide, which are associated with cancers of the mouth, throat, lung, bladder, pancreas, and uterus.

不仅如此,香烟烟雾里还有许多致癌物,包括氨、一氧化碳等,它们与口腔癌、喉癌、肺癌、膀胱癌、胰腺癌、宫癌的发生相关。

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科学60秒 听力 2014年7月合集

Scientists, however, want to know what may be carried along with the water vapor—especially when vaping liquids are superheated, possibly emitting formaldehyde and other toxic components.

但科学家更想知道的是伴随着水蒸气释放出来的其他气体还有什么,比如液体过度加热时可能会产生的等有毒气体。

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TED演讲(音频版) 2015年9月合集

Molecules not just like methane, but formaldehyde and cyanide -- things that are the building blocks -- the seeds, if you will -- of life.

不只是像甲烷那样的分 还有和氰化物像是生命结构基础(building blocks) 生命的种的物质。

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科学60秒 听力 2014年11月合集

Also in the mix: formaldehyde and methanol, found in embalming fluid, mixed with faint traces of poisonous hydrogen cyanide, which has an almond-like aroma.

罗斯塔还在防腐剂中发现与微量含杏仁气味的有毒氰化氢混合在一起的和甲醇。

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宇宙的奇迹

But there are also complex carbon compounds in here. So there's methanol, there's hydrogen cyanide, there's formaldehyde, there's dimethyl ether.

还有一些复杂的碳基化合物,比如甲醇 、氰化氢、 、 二甲醚。

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Vox 观点

In it's pure form, the EPA has reported that it could be dangerous to human health if ingested.

美国环境保护署报告说,如果摄入纯形式的,可能对人体健康有害。

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Scishow 精选系列

The plants were put into sealed containers, and the air pumped full of chemicals including benzene and formaldehyde.

这些植物被放进密封中,气体中充满了各种化学物质,如苯和

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科普小杂文

No methanol poisoning nor changes in formaldehyde levels in the body.

没有甲醇中毒,体内含量也没有变化。

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Asap SCIENCE 精选

Vaccines have contained mercury, aluminum, and formaldehyde, ingredients that can be toxic. What else can be toxic?

一些疫苗含有汞,铝和,一些均可能引起中毒的物质,但是你知道什么也可能引起中毒吗?

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TED演讲(视频版)双语精选

And we feed those positively charged spheres negatively charged electrons by adding formaldehyde to the mix.

同时我们通过往混合液里加入给带正电的球体里提供带负电的电

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TED演讲(视频版)双语精选

You see, the electrons on formaldehyde have a drive.

于是,这些上的电有了内驱力。

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连线杂志

So embalming fluids made out of methyl alcohols instead of carcinogens like formaldehyde.

所以防腐液是用甲醇做的而不是之类的致癌物。

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《分钟地球》趣味科普(精选双语)

So while boatloads of aluminum, buckets of formaldehyde, and an up-close meet-and-greet with a full-strength pathogen are all definitely bad ideas, a controlled concoction from a doctor is designed to be just nasty enough to keep us safe.

所以说,整船的铝,成桶的,和全副武装的敌人狭路相逢绝对是愚蠢透顶的糟点,但医生配制的令人生厌的混合物却能保障我们的安全。

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Asap SCIENCE 精选

But it can also emit carbon monoxide, methane, formaldehyde, and particulate matter, which decades of research have shown negatively affect our respiratory and cardiovascular systems.

但它还可能释放一氧化碳、甲烷、和颗粒物,几十年的研究表明这些物质对我们的呼吸和心血管系统都有负面影响。

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