urea

[美]/jʊ'riːə/
[英]/jʊ'riə/
词频: 极高

释义

n. 尿素,脲
词形变化
复数ureas

短语搭配

urea nitrogen

尿素氮;脲氮

urea formaldehyde

脲醛;尿素甲醛

urea formaldehyde resin

脲醛树脂;尿素树脂;脲醛尸

urea resin

尿素甲醛树脂;脲醛树脂;尿素树脂

urea peroxide

过氧化脲

urea fertilizer

尿素;尿素肥料

例句

Methane phosphonic acid, salt of guanyl urea;

名称 甲烷膦酸的脒基脲盐;

Urea, polymer with ammonium chloride , cyanoguanidine and formaldehyde;

名称 脲与氯化铵;氰基胍和甲醛的聚合物;

Im : Urea, Hexamine, Pentaerythritol, Titanium Dioxide, Rutile, T.M.P.(Tri Methyol Propane

进口:尿素,四氮六甲团,季戊四醇,二氧化钛,金红石,

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。

Urea solution with the addition of formaldehyde can be used to produce larger urea prills, the strength of the product prills is improved, and dust is reduced;

尿素溶液中加入甲醛,可用于大颗粒尿素的生产,同时可提高成品颗粒强度,降低粉尘,这是目前尿素企业生产控制的一种措施,甲醛在尿素成品中转化为亚甲基二脲。

The biruet can develop the color with the cupric sulfate in the alkaline solution, we call that the biruet reaction.Malonyl urea has acidity, so we call it barbituric acid.

巴比妥酸本身无镇静催眠作用,当它的五位亚甲基上的两个氢被烃基取代后才呈现镇静催眠的生理活性,是一类对中枢神经系统起抑制作用的化合物。

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。

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.

以尿素和乙二醛为原料,在酸催化的条件下合成了甘脲,产率为61.8%。

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乙撑硫脲(ETU)进行检测。

Bromacil was synthesized using 2-bromobutane and urea as the starting materials in three steps including condensation,cyclization and bromination with total yield of 61%.

以2-溴丁烷和尿素作为起始原料,经缩合、环化、溴代三步反应得到除草定,总收率为61%。

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.

以水为介质,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。

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。

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进行了对比试验。

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进行缩合反应的形式。

This paper has studied the phthalocyanin complex of Cobalt synthesized by benzene bitter wine-urea law,and after depuration,an infrared, ultra-violet spectrograph determination is carried.

文章主要研究了苯酐-尿素法合成酞菁钴、经提纯并对其进行红外、紫外光谱测定、合成及表征结果表明,红外光谱表征推测结构可靠,紫外光谱分析表明有特征吸收峰之处。

The new receptors are compared with preiously reported urea-based receptors targeting the glutamic acid residue and receptors targeting the pteridine substructure of folic acid.

新受体可与先前报道的以谷氨酸为靶向的尿基受体和以合成叶酸的喋啶为靶向的受体相比。

And two new segmented poly(urethaneureas) were prepared from poly(tetramethylene glycol)(PTMG) or polyadipate of 1,4 butanediol(PBA), MDI and Urea(as chain extender).

以尿素为扩链剂,合成了一系列聚氨酯脲热塑性弹性体及其硬段模型化合物。

This thesis mainly introduced that ureas and semicarbazides were synthesized by oxidation of corresponding thioureas and thiosemicarbazides using 30% peroxide as oxidant.

本文主要介绍了以30%浓度的双氧水作为氧化剂氧化硫脲、氨基硫脲来制备相应的脲和氨基脲类化合物。

原声例句

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

肺炎克雷伯杆菌产生的脲酶使得尿素分解成二氧化碳和氨。

来源: Osmosis - Microorganisms

Mainly, urea and uric acid producing even more ammonia.

同时尿素和尿酸会产生更多的氨。

来源: Scishow Selected Series

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

这些车辆现在没有安装尿素罐。

来源: NPR News October 2015 Collection

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

腐生葡萄球菌中的脲酶可使尿素分解为二氧化碳和氨气。

来源: Osmosis - Microorganisms

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

它们使用一种特殊的酶,它们向组织中填装尿素 ——另一种含氮化合物。

来源: PBS Fun Science Popularization

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

皮脂膜中的脂肪酸、尿素、尿酸和乳酸对皮肤有着保护和滋润作用。

来源: Intermediate English short passage

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,你的身体会产生更多的尿素。

来源: SciShow Collection

Some of it we use to make urea.

其中一些我们用来制造尿素。

来源: Freakonomics

They made a cement from urea and faux lunar soil.

他们用尿素和人造月球土壤制成了水泥。

来源: Student Science Journal

And be sure to use fertilizer without urea.

一定不要用含尿素的肥料。

来源: First Arrival (Season 2)

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