烯烃基

The speed of electrophilic addition reaction of Alkene is well-connected to the nature of substituting group on C=C.

对于烯烃的亲电加成反应速度，与C=C上直接连接的取代基的性质有关。

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。

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。

It revealed that the gaseous oxygen was related to the deep oxidation of hydrocarbon, since the breakage of C-C bond in allylic intermediate didn＇t exist during the process of reaction. This is due to the weak ability of lattice oxygen to attack hydrocarbon molecular.

实验结果指出，烃类的深度氧化反应与气相氧的存在有关，晶格氧对烃分子中碳碳键的攻击较弱，反应中烯丙基中间体几乎不发生碳碳键的断裂。

By the theories of cavitations and free volume, it analyses the factors on lubricant low-temperature property in view of molecule structure, brings up effective ways to improve the low-temperature properties, conducts plenty of testing with even designs, and then investigates and tests the lubricant's low-temperature properties with computerized system; it analyses the data by regressi on method and optimizes the solving, and studies on the base oil of environment friendly lubricants and selects the composition of colza oil, esters and PAO2, and discusses on low-temperature flowability of vegetable-base lubricants.

应用空穴理论及自由体积理论，从分子结构角度分析了影响润滑油低温性能的因素，提出了改善对润滑油低温性能的有效途径，组织了大量试验，通过润滑油的计算机检测系统对润滑油的低温性能进行了分析检测，采用均匀设计来组织实验；用逐步回归对数据进行分析并且进行最优化求解，对环境兼容润滑油的基础油进行了分析研究，选择菜籽油、季戊四醇酯和聚α-烯烃作为基础油，并从理论上对植物基润滑油的低温流动性进行了探讨。

By the theories of cavitations and free volume, it analyses the factors on lubricant low-temperature property in view of molecule structure, brings up effective ways to improve the low-temperature properties, conducts plenty of testing with even designs, and then investigates and tests the lubricants low-temperature properties with computerized system; it analyses the data by regression method and optimizes the solving, and studies on the base oil of environment friendly lubricants and selects the composition of colza oil, esters and PAO2, and discusses on low-temperature flowability of vegetable-base lubricants.

应用空穴理论及自由体积理论，从分子结构角度分析了影响润滑油低温性能的因素，提出了改善对润滑油低温性能的有效途径，组织了大量试验，通过润滑油的计算机检测系统对润滑油的低温性能进行了分析检测，采用均匀设计来组织实验；用逐步回归对数据进行分析并且进行最优化求解，对环境兼容润滑油的基础油进行了分析研究，选择菜籽油、季戊四醇酯和聚α-烯烃作为基础油，并从理论上对植物基润滑油的低温流动性进行了探讨。

By the theories of cavitations and free volume, it analyses the factors on lubricant low-temperature property in view of molecule structure, brings up effective ways to improve the low-temperature properties, conducts plenty of testing with even designs, and then investigates and tests the lubricant's low-temperature properties with computerized system; it analyses the data by regression method and optimizes the solving, and studies on the base oil of environment friendly lubricants and selects the composition of colza oil, esters and PA02, and discusses on low-temperature flowability of vegetable-base lubricants.

应用空穴理论及自由体积理论，从分子结构角度分析了影响润滑油低温性能的因素，提出了改善对润滑油低温性能的有效途径，组织了大量试验，通过润滑油的计算机检测系统对润滑油的低温性能进行了分析检测，采用均匀设计来组织实验；用逐步回归对数据进行分析并且进行最优化求解，对环境兼容润滑油的基础油进行了分析研究，选择菜籽油、季戊四醇酯和聚α-烯烃作为基础油，并从理论上对植物基润滑油的低温流动性进行了探讨。

This will permit the production of TAME from the C5 iso-amylenes and some hexyl ethers from lighter C6 iso-olefins.

这将允许生产温驯从C5 iso amylenes 和一些己基的以太从更轻的C6 iso 烯烃。

In this catalyst system, the Knoevenagel condensations of a series of aromatic aldehydes with malononitrile or ethyl cyanoacetate were programmed and a mechanism was postulated as well. When aromatic aldehydes reacted with ethyl cyanoacetate, the corresponding alkenes proved to be E-isomers by 1H NMR.

在该反应体系中考察了一系列芳香醛和丙二氰、氰基乙酸乙酯的缩合反应，并推测了Knoevenagel缩合反应的机理，芳香醛与氰基乙酸乙酯缩合产物经1H NMR检测为E式烯烃。

The composition comprises: 35 to 65 wt % of an anionic detergent or surfactant selected from alkyl benzene sulphonic acids, alpha olefine sulfonates, long chain fatty acid sulphates, higher fatty acids, as well as the alkali metal and alkaline earth metal salts thereof, and natural detersive agents, and mixtures of any of these; 3 to 15 wt % of a non-ionic detergent or surfactant selected from alkoxylated alkyl phenols and alkoxylated fatty alcohols; 5 to 10 wt % of a water-swellable cellulose derivative or a salt thereof, wherein the cellulose derivative exhibits a viscosity of at least about 1500 cps, measured in a 1 % aqueous solution at 25 DEG C with a Brookfield viscometer having spindle 3, speed 30rpm, factor 40 for viscosities of 2500-3500 cps; 6 to 20 wt % of a solubility regulator selected from alkali metal and alkaline earth metal chlorides, carbonates and sulphates, aluminosilicates and starch; and 0 to 20 wt % of a fragrance or perfume in solid, liquid or microencapsulated form.

该组合物包含：a35―65％重量的阴离子洗涤剂，其选自烷基苯磺酸、α－链烯烃磺酸盐、长链脂肪酸硫酸盐、高级脂肪酸以及其碱金属和碱土金属盐和天然的去污剂，和任何这些组分的混合物；b）3―15％重量的非离子洗涤剂，选自烷氧基化烷基酚和烷氧基化脂肪醇；c）5～10％重量的水可溶涨的纤维素衍生物或它们的盐，其中纤维素衍生物按1％水溶液在25℃下用Brookfield粘度计（3号转轴，转速30rpm，2500―3500cps粘度的因子是40测定；具有粘度至少约1500cps；d）6―20%重量的溶解性调节剂，选自碱金属和碱土金属氯化物、碳酸盐和硫酸盐、硅铝酸盐和淀粉；和e）0～20％重量的为固体、液体或微囊包封形式的香精。

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。