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单词 ketones
释义

ketones /'ki:təun/

英汉-汉英词典
n. 酮类(ketone的复数)
词组 | 习惯用语
您要查找的是不是:
  • keystone n. [建]楔石;主旨,基本原则
  • ketone n. [化]酮
  • nakedness n. 裸出
  • quietness n. 安静,肃静 平静 朴素
ketone musk 麝香酮
musk ketone [有化] 麝香酮
phenyl ketone 苯酮
diethyl ketone 戊酮-3;[有化] 二乙基甲酮
methyl ketone 甲基酮
ethyl ketone n. 甲乙酮的别名
raspberry ketone 覆盆子酮; 羟苯基丁酮;
ketone body [生化] 酮体
dimethyl ketone 丙酮;二甲基甲酮
ketone group [有化] 酮基

网络短语:
Different indoline pigments ketones 异吲哚啉酮类颜料
azulene ketones 翻译
Olefine ketones 第五节
aromaticamino ketones 芳胺酮类化合物
organic ketones 有机酮化物
total ketones 总酮
aliphatic ketones 脂肪族酮类;脂肪酮
difluoro ketones 双氟酮类
active ketones 硅腈化反应
Methyl ketones 甲基酮
英语例句库
  1. Composition of 1,8 - cineole (80%), camphene, phellandrene, Terpineol acetate, geraniol, isoamyl aldehyde, citronellal, and pepper ketones.
    组成1,8-桉叶素(80%以上)、莰烯、水芹烯、萜品醇、乙酸香叶醇、异戊醛、香茅醛和胡椒酮等。
  2. OBJECTIVE To synthesis 5-bromide benzofuran ketone,the key intermediate of citaopram.
    目的合成抗抑郁药西酞普兰中间体5-溴苯酞
  3. This paper reviews the research and development of phosgene Derivates,including diphenyl ketone,chlorocarbonate,isocya-nate,acyl chloride and carbonates.
    本文综述了光气下游精细化学品的开发及生产进展,包括二苯甲酮类、氯代甲酯类、异氰酸酯类、酰氯类、碳酸酯类化合物。
  4. Last year in Germany found in different sportswater isopropylation photics tons of ketone (ITX) of microamounts.
    去年在德国发现不同的饮料中有异丙基噻吨酮(ITX)的微量残余
  5. Methods A serials of thiosemicarbazones were synthesized by utilizing aromatic aldehyde,aromatic ketone and thiosemicarbazide in aqueous solution under ultrasound irradiation.
    目的利用超声技术和水相体系相结合的绿色合成法优化缩氨基硫脲的合成条件,扩展超声技术在有机合成中的应用范围。
  6. The results showed that the main compound categories of aromatic components were alcohols, esters, terpenes and ketones for all half-highbush blueberry cultivars.
    结果表明,半高丛越橘以醇类、酯类、萜类和酮类物质为主。
  7. At the same time, some other oxycompound groups, such as carbonyl group, aldehyde group and ketone group, appear or increase with temperature rising.
    与此同时,醛、酮、酯类羰基、芳香酮、醛类羰基等类含氧基团或者从无到有,或者官能团数量不断增加。
  8. It has been demonstrated that the methods are successfully used for QSRR studies of quinazoline derivatives, alkypyridine, haloid alkane, ketone, alcohol, sulfur alcohol compounds.
    此方法中各参数物理意义明确,计算简便。
  9. Instead of being fueled by sugar, as it usually is, it begins to metabolize fat-derived molecules called ketone bodies, hence the term ketogenic diet.
    由脂肪转变而来的分子—酮体,取代了通常的糖,开始为大脑的新陈代谢功能。因此术语称之为生酮饮食。
  10. The syntheses of two new derivatives of 4 - pyrone, by the reaction of adipyl choloride with enamines deriving from chain ketones and aldehydes, are described.
    本文由链状醛酮的烯胺与己二酰氯反应合成两个新的4-吡喃酮衍生物。
  11. The invention is applied to the catalytic reactions such as aromatic ketone unsymmetrical hydrogen transfer reaction and can achieve very high yield and enantiotropic selectivity.
    此发明应用于芳香酮的不对称氢转移反应等的催化反应中,可以得到很高的产率和对映选择性。
  12. Examining the channels in mouse brains, the researchers infused brain slices with ketone bodies, chemicals produced by the lier when the body is on the ketogenic diet.
    在对鼠脑进行的通道研究中,研究者们用机体在生酮膳食时肝脏产生的化合物――酮体来浸泡脑片。

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原声例句
VOA Standard 2015年1月合集

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

甜香味尤其是这种所散发出,它的学名是丙酮。

WIL生活启示录

Not only that, as he shows here, the Alzheimer's brain actually uptakes ketones better than controls.

不仅如此,正如他在这里所展示的与对照组相比,老年痴呆症患者大脑摄取酮体的数量要更多。

连线杂志

We use nitrogen to clean the lacquer, and we use methyl ethyl ketone to keep the stylus clean.

我们用氮气来清洁漆,我们用甲乙酮来保持唱针的清洁。

WIL生活启示录

However, the Alzheimer's brain has no problem using ketones for energy.

然而,老年痴呆症患者大脑将酮体作为其能量来源却没有任何问题。

Scishow 精选系列

And when your body breaks down fats without much glucose around, it produces compounds called ketone bodies.

当你的身体分解没有太多葡萄糖的脂肪时,它会产生一种叫做酮体的化合物。

WIL生活启示录

Babies may be living on ketones even before birth.

甚至在出生前,婴儿可能就靠酮过活。

Chubbyemu胖鸸鹋

But lactation can also increase the production of ketones.

但是哺乳也会加剧酮类的产生。

Chubbyemu胖鸸鹋

Over these 3 days, they will monitor her blood sugar and ketones.

在这三天内,他们会测量她血糖和水平。

WIL生活启示录

Very simply put, ketones are a source of energy naturally produced in the body from fat when dietary carbohydrate is restricted enough.

简而言之,当人体碳水化合物摄入受限时酮体——人体内脂肪的代谢产物——便自然而然地成了大脑能量的新来源。

Asap SCIENCE 精选

This works for the time being, but ultimately only 75% of the brain's energy requirements can come from ketones. It still needs glucose!

这暂时会起到作用,但最终酮类只能够满足大脑所需能量的75%,它仍然需要葡萄糖!

中文百科

酮 Ketone

(重定向自Ketones)
酮基
酮(ketone)
La propanona (comúnmente llamada acetona) es la cetona más simple.

是一类有机化合物,通式RC(=O)R',其中R和R'可以是相同或不同的原子或官能团。酮的结构特征是具有一个与两个碳原子相连接的羰基(C=O)。 最简单的酮是丙酮。

酮是唯一一类羰基碳直接与两个碳原子相连的有机物。同为羰基化合物的醛、羧酸、酯、酰卤和酰胺中,羰基碳原子的一侧则分别与氢、羟基(氧)、氧、卤素与氮原子相连,不同于酮。

有α-氢的酮可发生酮-烯醇互变异构。酮与强碱反应产生相应的烯醇负离子,反应一般通过烯醇去质子化进行。

“酮”音tóng,在古汉语中有两义:“用马奶制成的酪”与“醋”。近代被用作欧洲语言中此类化合物名的音译。对比:英语ketone(“酮”,< acetone,“丙酮”),以及德语中语义相同的KetonAceton

英语百科

Ketone 酮

(重定向自Ketones)
Ketone group
酮(ketone)
La propanona (comúnmente llamada acetona) es la cetona más simple.

In chemistry, a ketone (alkanone) /ˈktn/ is an organic compound with the structure RC(=O)R', where R and R' can be a variety of carbon-containing substituents. Ketones and aldehydes are simple compounds that contain a carbonyl group (a carbon-oxygen double bond). They are considered "simple" because they do not have reactive groups like −OH or −Cl attached directly to the carbon atom in the carbonyl group, as in carboxylic acids containing −COOH. Many ketones are known and many are of great importance in industry and in biology. Examples include many sugars (ketoses) and the industrial solvent acetone, which is the smallest ketone.

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更新时间:2025/6/22 23:36:39