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Four compounds were elucidated as glaucocalgxin A,oleanolic acid,ursolic acid and daucosterol.

分离得到4个,为蓝萼甲素、齐墩果酸、乌苏酸和胡萝卜苷。

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A specific thin-film technology is based on the use of Copper Indium Diselenide (CIS) material.

还有一种基于使用铜铟硒(CIS)材料的特殊薄膜技术。

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It was found that the roots of Smilax China L contained flavone,flavonol,dihydroflavone and dihydroflavonol etc.

结果表明,在菝葜植根茎中含有、二氢、二氢等多种

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It was found that both Smilax chinaL.and Smilax glabra Roxb.contain flavone,flavonol,dihydroflavone and dihydroflavonol etc.

在菝葜和土茯苓根茎中均含有,,二氢,二氢等多种

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METHODS The title compound was synthesized from phthalimide by oxidation with sodium hypochlorite.

法以邻苯二甲酰亚胺为原料经次氯酸钠氧化成目标

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Three novel malononitrile derivatives have been synthesized by the solid state reaction at room temperature.

固相反应成了新型丙二腈类

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Isoquercitrin is obtained from Hypericum perforatum L.for the first time.

首次从贯叶金丝桃中分离得到异槲皮苷。

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Four new triazol organic phosphorus compounds with the general formula(I) have been prepared.

成了四种标题,探讨了其法。

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Objective To separate flavonol and flavanonol by the column chromatography of polyamide.

目的采用聚酰胺柱色谱分离与二氢

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The complex 1 features a 2D tetrazole coordination polymer.

1为二维四唑配位聚

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Water is a compound of hydrogen and oxygen.

水是氢和氧的

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The stereostructure can be predicted from the rotatory direction for simple compounds(for example S,R-Noscapine).

对于较简单的,通过旋光向可以推断其立体结构(例如S,R那可汀)。

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Epoxides, episulphides and ethylene imines also polymerize via similar cyclic onium ion mechanisms.

环氧,环硫和乙烯亚胺也可以按类似于环氧?睦胱拥幕?理进行聚

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Tri (tribromophenyl) cyanurate is synthesized from Tribromophenol and Cyanuric Chloride.

摘要由三聚氯氰和三溴苯酚反应制得三(三嗅苯酚)氰尿酸酯。

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PFOA and other related long-chain fluorochemicals stick to blood proteins and masquerade as digestive acids.

PFOA和其他相关的长链含氟会附著在血液里的蛋白质,假装成消化酸分子。

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The mass spectra of ureide-type noncyclic polyethers with 2(3H)-benzoxazolone as end groups were studies.

研究了以2(3H)-苯并唑为端基、具有酰脲结构的非环多醚的质谱。

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Hexahydroxy N-containing heterocyclic compound without sulfur and phosphorus was synthesized and its structure was characterized.

成了无硫、磷的六元含氮杂环添加剂。

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Continued research on the Podophyllum lignans is currently focused on structure optimization to generate deriv...

优化结构、寻找新的鬼臼毒素类资源替代品,已成为当前进一步研究的主要向。

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Our chemistry teacher often reduces a compound to its components in lab.

在实验室中化学老师常把分解为各种成分。

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You can apply heat to decompose organic compounds.

你可以加热来分解有机

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听力文摘

But this chemical seems to counteract an enzyme called quinol-oxidase.

但这种似乎可以抑制苯二酚氧化酶。

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科学60秒 听力 2016年10月

It's caused by volatile organic compounds, or VOCs.

室内空气污染的源头是挥发性有机(简称为VOCs)。

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美容时尚英语

Step 5 Practice portion control and eat a balanced diet of protein, fats, and carbohydrates.

练习分量控制,食用蛋白质,脂肪和碳水均衡的饮食。

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新概念英语.词汇随身听.三册

Air is a mixture, not a compound, of gases.

空气是气体的混,而不是

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生活大 9季

They're basically pure hydrocarbons soaked in fat. Let's hope the lug nut expands.

基本就是沾满油的纯碳氢,希望轮爪螺母可以膨胀。

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科学世界

Another study found that breakfasts high in fat taste better, but led to consuming more food throughout the day as opposed to a high fiber and carbohydrate breakfast which satiated hunger and increased cognitive function throughout the day.

另一则研究发现早餐如果富含脂肪,虽然吃起来很美味,但会让人们一整吃下更多额外食。相反的,富含纤维与碳水的早餐,能让增加饱足感,并提升一整的认知能力。

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CNN 10 学生英语 2017年11月

When it comes to forming compounds, no element comes close to carbon, which comes from a Latin word for coal.

没有元素比碳构成多。碳来源于拉丁文意思是煤。

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Crash Course 文篇

Titan has wind-sculpted dunes, but they're made of hydrocarbon grains, not sand.

土卫六上有许多风塑沙丘,不过它们是由碳氢颗粒构成的,而不是沙子。

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历年六级听力真题精听

According to a study published in the journal Cell, the compounds successfully removed deadly strains of bacteria in mice which are resistant to all known antibiotics.

根据发表在《细胞》杂志上的一项研究,该成功地清除了小鼠体内对所有已知抗生素有抗性的致命菌株。

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历年六级阅读真题精听

The low-carbohydrate food movement gave birth to such diets as the Atkins, Paleo and Keto, which advised swapping foods like bread, pasta and potatoes for vegetables, fish and meat.

低碳水饮食运动催生了一些减肥饮食法,如阿特金斯饮食法、旧石器时代饮食法和生酮饮食法,这些饮食法建议用蔬菜、鱼和肉来代替面包、意大利面和土豆等食

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VOA Standard 2014年7月

New malaria drugs will be needed. The World Health Organization warns the parasites are building a resistance to the main anti-malarial compound artemisinin.

目前需要新的疟疾药,世卫组织警告说,这些寄生虫在对主要的抗疟疾青蒿素产生抗性。

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历年六级阅读真题精听

The reviewers found that pasta had been unfairly demonized because it had been lumped in with other, more fat-promoting carbohydrates.

评估者发现意大利面被不公正地妖魔化,因为人们把它与其他增加脂肪的碳水混为一谈。

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爱豆飙英语

Like, carbs, I won't take it because I know I can't.

说碳水是因为我知道自己不能吃那些东西。

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英语六级新题型

Heating this chemical compound drives off carbon dioxide gas leaving calcium oxide.

加热这种会驱除二氧化碳气体,留下氧化钙。

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CNN 10 学生英语 2019年2月

In which of these products would you most likely find the organic compound oxybenzone?

在这些产品中,你有可能找到有机氧苯酮?

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CNN 10 学生英语 2018年5/6月

We're using a bowl of plasma energy in breaking apart hydrocarbon and reaming the carbon down on seeds of diamond, atom by atom CRANE: How long does it take to produce one of these?

我们正在用一份等离子体能量来分解碳氢,把碳原子放在制造钻石的基底上,一个原子一个原子地排列。克莱恩: 要多久才能生产出这样的产品?

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当月 CNN 10 学生英语 2019年11月

Scientists already have a sense of which compounds in human odors attract mosquitoes.

科学家已经察觉到人类体味中的会吸引蚊子。

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CNN 10 学生英语 2019年5月

The meals all had the same amount of calories, fat and carbohydrates but participants were allowed to eat as much or as little as they wanted.

这些食都含有相同的卡路里,脂肪和碳水,但参与者被允许吃他们想吃的多或少。

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剑桥雅思听力全真试题 5

This energy is provided by foods which are high in carbohydrate and fat.

这些能量来自高碳水和脂肪的食

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科普小杂文

Vinyl manufacturers and trade organizations say yes, because PVC is mostly made from a compound based on salt, a natural material, and it supposedly uses less energy to manufacture than other plastics.

氯乙烯制造商和贸易组织是这么认为的,因为PVC主要是由一种基于盐的制成的,是一种然材料,据说它比其他塑料消耗更少的能源。

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