烯烃

Long-chain alkene is adsorbed on the surface of catalysts much more strongly than benzene is adsorbed.

长链烯烃在催化剂上的吸附比苯要强得多。

The analysis results showed that the rapid and accurate determination of alkene content in jet fuels can be achieved by using near infrared spectrum analysis.

分析结果表明，近红外光谱分析可实现对喷气燃料烯烃含量的快速准确测定。

The preparation of potassium malonyloxyborohydride in situ and its seletive hydroborating alkene are described.

介绍了丙二酰氧基硼氢化钾的制备及其原位与烯烃的选择性硼氢化。

A hydrocarbon was known to be either an alkene or alkane.

某碳氢化合物已知可能是烯烃或是烷烃。

The second part is the folding of apo cyt c induced by the alternating copolymers of maleic acid and alkene.

论文工作的第二部分研究了马来酸—烯烃交替共聚物对脱辅基细胞色素c结构转换的影响。

Supercritical conditions can enhance the conversion of isooctane but lower the alkene selectivity simultaneously.

超临界条件与常压相比能提高异辛烷的转化率，但同时使烯烃选择性降低。

Alkene can turn bromine from brown to colorless.

烯烃可把溴由棕色变成无色。

Changes to FCC gasoline cutpoints and the possibility of blending by dilution (adding components such as ethers or alkylate) can be used to meet a sulfur or olefin specification for individual gasoline grades if a preliminary blend is already close to the specification and the refinery desires to increase total gasoline production.

对FCC 汽油cutpoints 的变动和混和的可能性由稀释(增加组分譬如以太或烷基化)可能使用符合各自的汽油等级的硫磺或烯烃规格如果初步混合已经是紧挨规格和精炼厂渴望增加总汽油生产。

Linear alkyl benzenes and linear alkyl dimethyl benzenes, prepared by the alkylate reaction of linear alpha olefin with benzene or dimethyl benzene which were sulfonated by chlorosulfonic acid and then neutralized to produce linear alkyl benzene sulfonates and linear alkyl dimethyl benzene sulfonates.

本文以一定链长的直链α-烯烃分别与苯和混合二甲苯为原料制备了直链烷基苯和烷基二甲苯，经氯磺酸磺化，中和可得到具有一定链长的直链烷基苯磺酸盐和直链烷基二甲苯磺酸盐。

In addition, the effect of different olefins on alkylation reaction was also investigated.

另外，还考察了烯烃碳链长度对苯烷基化反应的影响。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。