| 释义 |
alkenes 英'ælkənz美'ælkənz BNC⁹¹⁵¹⁷⁺⁸
基本英英例句
烯属烃¹⁰⁰原型alkene的复数
名词 alkene:
any unsaturated aliphatic hydrocarbon And cigarette smoking increases the risk of Alzheimer's by more than150 percent, possibly because of the type-2 alkenes in tobacco smoke.
二手烟将罹患阿尔兹海默症的风险提高1.5倍，很可能是因为烟草中含有2型烯烃。 yeeyan
In their view, a group of chemicals called type-2 alkenes, which are widespread in both the environment and the brains of Alzheimer's patients, act as major drivers of the disease.
科学家认为，一组名为“2型烯烃”的化学物质是造成疾病的罪魁祸首，此物质广泛分散于阿尔兹海默患者的脑内和生活环境中。 yeeyan
It had been demonstrated by our experiments that higher conversion of hydrocarbons and yield of light alkenes could be obtained in the GOC of various hydrocarbons than those in the pyrolysis.
不同原料烃的气相氧化裂解实验表明，与热裂解相比，气相氧化裂解在较低温度下就具有很高的烷烃转化率和高的烯烃收率； cnki
The application of metal complex as the catalysts of aerobic oxidation of alcohols and epoxidation of alkenes are reviewed.
综述了各种金属络合物催化剂在分子氧作为氧化剂在醇的氧化、烯烃的环氧化上的应用。 cnki
The progress in alkylation reaction of benzene with long chain alkenes was introduced from the two aspects of catalyst research and reaction technology.
从催化剂研究和反应技术两方面介绍了苯与长链烯烃烷基化反应技术的研究开发进展。 chemyq
The rate constants of radical and electrophilic addition to alkenes are dominated by different factors.
烯烃的自由基加成和亲电加成速率受不同的因素控制。 dictall
The standards of fuel quality have tended to the direction of low content of aromatics and alkenes due to the increase of consciousness for environmental protection.
由于经济发展和环境法规日趋严格，燃料油的质量标准向低芳烃和烯烃含量的方向发展。 fabiao
As evidence, he points to studies showing that Alzheimer's patients have large amounts of type-2 alkenes in their brains.
他还出示了能够证明阿尔兹海默患者脑中含有大量2型烯烃的研究作为证据。 yeeyan
Based on the reaction medium and the elements in the catalysts, the recent progresses of epoxidation of alkenes with hydrogen peroxide have been reviewed.
以反应介质和主催化元素为线索，对双氧水为氧源的烯烃环氧化反应的最新研究进展进行了综述。 chemyq
But he disagreed with the argument that type-2 alkenes in the environment are part of the story.
但他不同意环境中的2型烯烃会导致阿尔兹海默症。 yeeyan
ConclusionThere were 27 kinds of identical substances in the oils, and the essential oil constituents from them were mainly higher alkanes, alkenes, alcohols, ketones, phenols and organic acid.
结论三者挥发油中相同的物质共有27种，但各物质在含量上有所差别，其中挥发油主要含高级烷烃、烯烃、醇、酮、酚及有机酸。 lwlm
Epoxidation of alkenes is one of the most important reactions in organic, synthesis.
烯烃环氧化在有机合成中占有十分重要的地位。 dictall
Exposure to type-2 alkenes in the environment has already been linked with cancer, heart disease, and other problems.
科学家已经将癌症、心脏病及其他疾病与暴露在含有2型烯烃的环境里关联起来。 yeeyan
For higher olefin that has poor solubility in water, the hydroformylation reaction rate is much less than short- chain alkenes.
对于水溶性差的高碳烯烃，其氢甲酰化反应速度远远低于低碳烯烃。 cnki
In the process of curing, the loss of unsaturated alkenes was remarkable for its content has been obviously decreased,6 unsaturated alkenes haven't been detected.
在腌制过程中，不饱和烯烃类损失较大，含量明显下降，其中有6种未检出；124.205.222.100
Light alkenes play a significant role in the petrochemical industry.
低碳烯烃在石化工业中起着举足轻重的作用。 cnki
Secondly, kinetics for alkylation of benzene with long chain alkenes over solid acid catalyst had been studied, making the research of alkylation from quality to quantity.
其次，关于苯与长链烷烯混合烃烷基化反应的固体酸催化过程进行非稳态的动力学研究，使烷基化过程的实验定性研究发展到数学层次的定量研究。 cnki
Synthetic dying wastewater was treated by immobilized biological activated carbon in multistage baffled bioreactor. The water quality of effluent was stable and peptide bond of alkenes was shorted.
在多级折流板反应器生物处理装置中，采用活性炭为载体人工固定化生物处理合成染料废水，出水水质稳定，出水中的烷烃肽链变短； xuebao.jlu.edu.cn
Table2 shows names for some alkyl groups, alkanes, alkenes and alkynes.
表2显示了一些烷基、烷烃、烯烃及炔烃的命名。 yeshj
The review is focused on the recent development of asymmetric synthesis of chiral epoxides by biocatalyzing prochiral alkenes.
文章重点讨论了生物催化手性前体烯烃不对称合成光学活性环氧化合物的发展状况。 cnki
The impurities in fatty alcohols are single- carbon alkanes and alkenes through the analysis and identification of C14-16 alcohols by GC-MC.
本文通过色质谱对 C14-16醇的分析鉴定，弄清脂肪醇中的杂质是单碳烷烃和烯烃。 cnki
While scientists disagree about what causes nerve- ending degeneration, studies have clearly shown that the progression of the disease itself produces type-2 alkenes in the brain.
虽然科学家对造成末梢神经细胞退化的因素存在分歧，但研究已经证明，随着疾病的发展，脑中会生成2型烯烃。 yeeyan |