查询词典 butyl

Synthesis of Butyle Acylate with acrylic acid and butyl alcohol at the catalysis of ethand by heteropoly acid in reduced pressure distillation were described in this paper.

由于丙烯酸正丁酯沸点较高，在常压下蒸馏易发生自身聚合反应而影响产率，所以采用减压蒸馏以降低其沸点。

Objective］ GC analytical method for butyl ether in the workplace air using sampling by charcoal tube was studied.

目的］ 研究炭管采集空气中丁醚的气相色谱分析方法。

An ampoule of amyl nitrite or butyl nitrite used as a stimulant drug.

担子菌的一个小目，由鸟巢菌科和弹球菌科组成。

The oxydation products of some of the secondary alcohols was shown to be ketones. The conjugation of three tertiary alcohols, butyl, amyl and hexyl, was higher than that of the corresponding primary and secondary alcohols.

某些二级乙醇氧化产物表明是酮。3种三位乙醇的接合，丁基，戊基和已基，比对应初级和二级乙醇更高。

Herein, a 13C NMR study of the LHBPEs is presented. Short branches such as methyl, ethyl, propyl, butyl and amyl were assigned and quantified.

本文主要对LHBPE进行13C NMR研究，并对聚合物分子的支链如甲基、乙基、丙基、丁基和戊基等进行归属和定量研究。

A method for analysis of butyl hydroxy anisole in simvastatin had been established by HPLC.

建立了测定辛伐他汀中抗氧化剂叔丁基羟基茴香醚含量的高效液相色谱方法。

Meanwhile, experiment with the ternary mixture of methanol, butyl methyl ether and 1-chlorobytane showed that the system was not ternary azeotrope and can be separated by combination of extractive and rectification using water as extractive solvent.

针对甲醇、甲基正丁醚和正氯丁烷三元混合物，研究了该物系的性质，得到该物系不是三元共沸物的结论，并用水作萃取剂，通过实验验证了利用萃取和精馏耦合的方法分离该物系的可行性。

It showed that the hydrophobicity of XDM-R2 type continuous rod would be increased with the decreases in butyl methacrylate.

在XDM-R2连续棒的合成中，介质的疏水性随甲基丙烯酸丁酯含量的增加而减小。

Benzoin condensation using imidazolium based ionic liquids as solvent for the first time has been successfully achieved. The reaction conditions have been studied in detail. When under 65 and with 0.5 equiv. NaOH in ionic liquid l-butyl-3-methyl-imidazolium tetraborate, benzoin was obtained in excellent yield of 91%. Recycling of ionic liquid has been available.

首次探索并成功实现了在咪唑鎓盐离子液体中进行苯偶姻缩合反应，详细探讨了反应条件，当反应在65℃下和0.5当量NaOH存在下以及在离子液体4-丁基-1-甲基咪唑鎓四氟硼酸盐中进行时，苯偶姻产率可达91％；并对离子液体进行了有效回收再利用。

Objective:To study the antifungal activity of triazole alcohols by introducing N-butyl and substituted benzyl as side chain.

目的：研究具有正丁基和取代苄基侧链结构的三唑醇类化合物的抗真菌活性。

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。