丁二胺

The results showed that the ashless dispersant prepared had low temperature dispersivity.

结果表明，本实验合成获得的聚异丁烯丁二酰亚胺无灰分散剂产品具有低温分散性能。

Low temperature dispersivity of ashless dispersant TEPA was analyzed by the sludge spot distribution test.

以油泥斑点分散试验法对合成产物聚异丁烯丁二酰亚胺无灰分散剂进行低温分散性能测试。

Study on an efficient process for the preparation of trifloxystrobin starting from 2-methylacetophenone bypartial oxidation,esterification,reaction with methoxyamine,bromization and condensation with 3'- acetophenone oxime.

以邻甲基苯乙酮为原料，经过高锰酸钾的碱性氧化，甲醇酯化，再与甲氧基胺盐酸盐肟化后，用N-溴丁二酰亚胺溴化，最后和间三氟甲基苯乙酮肟缩合得到目标产物肟菌酯。

Novel ZnSe nanosheets with tunable size and phase have been facilely synthesized via hydrothermal routes in the presence of neutral butylamine as structure-directing agent and ethylene diamine tetraacetic acid as stabilizer.

以乙二胺四乙酸为稳定剂、丁胺为结构导向模板，采用水热合成方法制备了尺寸和晶型可控的ZnSe纳米片晶；利用XRD，TEM，SEM以及紫外-可见漫反射等手段对所得的产物进了表征，结果表明，通过改变水热温度和BA用量，可以实现ZnSe纳米片晶的大小和物相的调控，并初步分析了其形成过程

METHODS. Recombinant human collagen (13.7%) type I or III was thoroughly mixed with 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide and N-hydroxysuccinimide.

I型或III型重组人胶原蛋白（ 13.7 ％）被彻底与1 -乙基- 3 -（ 3 -二甲氨基）碳化二亚胺和N-羟基丁二酰亚胺混合。

Compostie effects between zinc dialkyldithiophosphate and succinimide in liquid paraffin were investigated, and the protecting films formed on iron surface by either of the two additives alone or their combination were studied with the aid of in situ dynamic temperature variation infrared spectroscopic technique.

研究了二烷基二硫代磷酸锌与丁二酰亚胺在液体石蜡中的复合效应，并对这2种添加剂单独使用或组合使用时在铁表面形成的保护膜进行了原位动态变温红外光谱分析，同时还与其它添加剂组合体系作了对比试验研究，探讨了二者产生复合效应的机理。

Zinc dialkyldithiophosphate succinimide friction reduction and antiwear performances synergistic effect adverse effect

中文关键词：二烷基二硫代磷酸锌，丁二酰亚胺，减摩抗磨性能，协同效应，对抗效应

The other type of trimeric product containing 2 ferrocene units has also been synthesized. Its 13C NMR anal.

通过混合三聚反应，也合成了另一类含两个二茂铁化合物， N，N'-二-2-羟基-5-特丁基苯甲二胺。

Chlorine atoms were selectively introduced into the chlorin ring based on different reactivity between vinyl group at 3-position and 20-meso position by electrophilic addition and electrophilic substitution using hydrogen peroxide/hydrochloric acid, N-chlorosuccinimide, hydrogen chloride (or concentrated hydrochloric acid) as chlorinating reagent.

以过氧化氢/盐酸、N-氯代丁二酰亚胺、氯化氢为氯化剂，根据3-乙烯基和20-meso-位的不同化学反应活性，通过亲电加成和亲电取代反应，在二氢卟吩环上选择性地引进氯原子，完成8种未见报道的具有叶绿素-a基本碳架的氯代二氢卟吩衍生物的合成。

Xi′an Jiaotong University, X i′an 710049,China）Abstract : A light-yellow solid could be formed by the rea ction of ethylene diamine and dibutyl phthalate as epoxy additives. S olidification is maintained while fragility is reduced.

在环氧树脂粘接实践中，发现添加剂乙二胺与邻苯二甲酸二丁酯会反应生成淡黄色固体，它对环氧树脂仍有固化和降低脆性的作用。

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。