查询词典 butyl

Brominated butyl rubber was prepared by solution method,and its microstructures were characterized by 1H-NMR. It has three main microstructures,that is the unbrominated isoprene structure,the exomethylene allylic bromide structure (structure Ⅱ) and the bromomethyl olefinic structure (structure Ⅲ).

通过溶液法制备溴化丁基橡胶，并用核磁共振对溴化丁基橡胶的微观结构进行了分析，其中存在3种主要微观结构，即未溴化的丁基橡胶结构，溴代仲位烯丙基结构及溴代伯位烯丙基结构。

Cefixime open side chain acid was prepared by oximation,etherification,chlorination,ester decomposition using t-butyl acetoacetate as starting material.

以乙酰乙酸叔丁酯为原料，经过肟化、醚化、氯代酯解反应合成了头孢克肟开环侧链酸。

Another relevant oxygenate is ethyl-tertiary-butyl ether, which has increasingly replaced MTBE.

另一个相关的氧化是乙基叔丁基醚，这已日益取代甲基叔丁基醚。

This is done to reduce the current emissions and is seen as a logical replacement for Methyl Tertiary Butyl Ether which, as an oxygenate, improves combustion in petrol engines and allows fuel to burn cleaner.

这是为了减少目前的尾气排放，并被视为是甲基叔丁基醚合理的替代物，MTBE是一种氧化剂，能够改善汽油机的燃烧并使燃料燃烧更清洁。

The effects of the concentrations of surfactants, NaCl, NaOH, NaHCO3, n-butyl alcohol and molecular structures of surfactants on pentadecyl aryl sulfonates adsorption were investigated.

分别考察了表面活性剂浓度、NaCl、NaOH、NaHCO3、正丁醇浓度及分子结构对表观吸附量的影响。

About tetra-n-butyl ammonium polyiodides: triiodide and pentaiodide anions are the basic building blocks; heptaiodide anion and undecaiodide anion are composed by triiodide anion, and nonaiodide anion is composed by pentaiodide anion. Therefore the character of triiodide, heptaiodide and undecaiodide polyiodides is similar, and that of pentaiodide and nonaiodide polyiodides is similar.

正四丁基多碘化铵化合物中：碘三离子和碘五离子是基本的结构单元，碘七离子和碘十一离子是由碘三离子构成的，碘九离子是由碘五离子构成的，所以碘三、碘七和碘十一形式的高聚碘具有相似的性质，碘五和碘九形式的高聚碘具有相似的性质。

The following conclusions have been gotten from a large amount of experiments and determinations: Triiodide, pentaiodide, heptaiodide, nonaiodide, undecaiodide of solid tetra-n-butyl ammonium polyiodides and tetrabutyl ammonium bromide polyiodides can be synthesized by solid phase process which is a economic easy way, while its not suitable for synthesizing solid tetramethyl ammonium polyiodides; Solution polyiodides of triiodide, pentaiodide can be synthesized through the complexation process, and TX-10 is a better complexing agent; Triiodide, pentaiodide, heptaiodide resinic polyiodides were synthesized by ion-exchange of resinifying process, and that is a viable easy way.

在大量实验和分析的基础上，可得到以下结论：用固相法可以合成出碘三、碘五、碘七、碘九和碘十一形式的正四丁基多碘化铵固体高聚碘和四丁基多碘化溴化铵固体高聚碘系列化合物，是制备高聚碘的经济、方便的合成方法，但此法对合成四甲基多碘化铵固体高聚碘系列化合物并不适用；TX-10是合成溶液高聚碘较佳的络合剂，通过其络合作用可以合成出碘三和碘五形式的溶液高聚碘；采用树脂法，通过离子交换，合成出了碘三、碘五和碘七形式的树脂高聚碘，此法简单可行。

The electric conductivity of solid polyiodides increases largely as the aggrandizement of polyiodide anions"polymerization degree. The solid polyiodides have excellent sterilizing effects and the effect of tetra-n-butyl ammonium undecaiodide is the best of them, and the sterilizing effects increase as the aggrandizement of polyiodide anions" polymerization degree. The sterilizing effects of resinic polyiodides increase as the aggrandizement of polyiodide anions polymerization degree, the heptaiodide resinic polyiodide has better sterilizing effects than the triiodide and pentaiodide.

固体高聚碘系列化合物的电导率随着高聚碘阴离子聚合度的增加而增加，并且增幅较大；固体高聚碘对常见细菌均具有很好的杀灭作用，并且随着高聚碘阴离子聚合度的增加，杀菌能力也随着增强，其中正四丁基十一碘化铵杀菌剂的效果最佳；树脂高聚碘随着高聚碘阴离子聚合度的增加，杀菌能力增强，碘七树脂高聚碘的杀菌效果要明显好于碘三树脂和碘五树脂高聚碘。

Ethyl alcohol, 3-methyl-4-oxo- pentanoic acid, acetic acid butyl ester, 2-methyl-butanoic acid ethyl ester, diethyl phthalate,-2,4-Decadienal were the same volatiles d from the 10 cultivars.

其中共有组6种，为乙醇、3-甲基-4-羰基戊酸、乙酸丁酯、2-甲基丁酸乙酯、邻苯二甲酸二乙酯、-2，4-癸二烯醛。

The influence of MAH,AA,MAA,AM and GMA on the surface hydrophilicity of PP product was studied by means of reactive extrusion process on twin screw extruder,where 1,1-bis (tea-butyl peroxy)-3,3,5- trimethylcyclohexane (LQ-CH335) was used as initiator,and MAH,AA,MAA,AM and GMA as graft monomers, and St as graft co-monomer.

塑料用涂料技术是塑料工业和涂料工业之间的一项新兴的边缘技术，塑料和塑料制品上涂敷涂料后可以延长使用寿命，提高各种性能，热固性塑料制品基本上能应用普通的涂装技术，涂上合适的市售涂料。

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。