查询词典 carbon

The pinacol coupling of carbonyl compounds affording pinacol s is an important method for the formation of 1, 2-diols and one of the most powerful methods for constructing carbon-carbon bond.

醛酮的片呐醇偶联是合成片呐醇的经典而有效的方法之一，也是形成C-C键的有效途径，一般通过醛酮与金属试剂或金属络合物作用来实现。

The pinacol coupling of carbonyl compounds affording pinacols is an important method for the formation of 1, 2-diols and one of the most powerful methods for constructing carbon-carbon bond.

醛酮的片呐醇偶联是合成片呐醇的经典而有效的方法之一，也是形成C-C键的有效途径，一般通过醛酮与金属试剂或金属络合物作用来实现。

Plass pointed out that humanity was conducting a large-scale experiment on the atmosphere, the results of which would not be available for several generations:"If at the end of this century, the average temperature has continued to rise and in addition measurement shows that the atmospheric carbon dioxide amount has also increased, it will be firmly established that carbon dioxide is a determining factor in causing climatic change."

普拉斯指出人类正在对大气进行一场大规模的实验，其结果在几代人之内不会显现出来，&如果到本世纪末，平均气温还在持续升高，并且测得的数据显示大气中的二氧化碳含量也在提高，就能肯定二氧化碳是引起气候变化的决定因素。&

In a 1997 interview, Plass told me,"all sorts of things came together" that placed him at the scientific forefront: new detailed laboratory measurements of the absorption bands of water vapor, carbon dioxide and ozone; theoretical developments involving the influence of temperature and pressure on infrared absorption; new information about the carbon cycle and industrial emissions; and access to a new high-speed electronic computer to facilitate complex calculations of radiative transfer that replaced the older, graphical approximations.

在1997年的一次采访中，普拉斯告诉我：&所有的事情都赶在一块儿&，把他推到了研究的最前沿：测量水蒸气、二氧化碳和臭氧的吸收光谱带有了新的实验方法；温度和压强对红外吸收的影响理论有了新的发展；碳循环和工业废气排放有了新的资料；新的高速电子计算机代替了老式的图解近似法，让辐射传热的复杂计算变得简单了。

In this paper,three kinds of conductive adhesives were developed by using polyvinylidene fluoride as binding materials and carbon nanotubes graphite and carbon black acetylene as conductive fillers.

采用涂膜法制备了以碳纳米管、乙炔黑和石墨粉为导电填料的导电胶，研究了它们的电学性能、力学性能和粘结性能。结果显示，聚偏氟乙烯/CNTS导电胶有较好的综合性能

The asymmetric alkynylation of carbonyls is proved to be one of the most powerful procedures for organic synthetic chemistry,where the formation of one carbon-carbon bond and one chiral center of propargylic alcohol can be achieved in one step,and has attracted organic chemists\' most attentions.Plenty of works have been reported in recent years.

由于催化末端炔对羰基化合物的不对称加成在制备手性炔丙醇的同时，能够构建一个碳碳键和一个手性中心，因而该领域的研究受到了研究者的广泛关注，有大量的研究工作见报道。

It is the first example to synthesize Z isomers of propenoic acids and their derivatives highly stereoselectively by the nucleophilic addition of a carbon- carbon triple bonds.

这种利用亲核试剂进攻碳-碳叁键以高立体选择性地合成丙烯酸及其衍生物的方法尚无前例。

It is reported, particular way is to adopt pulverous activated carbon is joined in water intake, the measure of grain activated carbon is added in clean cistern, go up to restore water supply hind to let a citizen eat safe water increases double insurance.

据悉，具体的做法是采取在取水口加入粉末活性炭，在净水池加入颗粒活性炭的措施，为恢复供水后让市民吃上安全水加双保险。

Experimental data on supercritical carbon dioxide deacidification of 10% free fatty acid contained oil at 200 bar, 353K, consumed with 2700 g of carbon dioxide indicated that concentration of free fatty acid in the raffinate oil dramatically decreased down to 0.26%, and the oil still retained 1.3% of γ-oryzanols and 94.7% triglyceride.

在超临界二氧化碳萃取蒸馏程序方面，以200 bar、353K和2700克的二氧化碳，在填充27公分高θ型网的萃取槽，脱酸游离脂肪浓度为10%的米糠油，可在塔底获得游离脂肪酸浓度为0.26 %的脱酸油。

The method can reduce residual carbon content on carbon containing molecular sieve catalyst to 0.1% by weight and produced regenerant has high structure-reserving property.

该方法可以将含碳分子筛催化剂上的残碳量降到0.1重％以下，所得再生剂具有高结构保留度。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。