二聚

The main results and conclusions are as follows:The trans-1,4 content of polybutadiene increased from 50%to 89%along with the increasing of Al/Li ratio;the trans-1,4 content of polyisoprene increased from 24%to 46%as well as 3,4 content along with the increasing of Al/Li ratio;the microstructure of polystyrene was invariable and atactic.

主要研究结果及结论如下：随着Al/Li的增加，聚丁二烯的反式结构含量从50%增加到89%；聚异戊二烯的反式-1，4-结构含量从24%增加到46%，并且其3，4结构含量也有所增加；聚苯乙烯的微观结构基本没有变化，为无规聚苯乙烯。

The main results and conclusions are as follows:The trans-1,4 content of polybutadiene increased from 50%to 89%along with the increasing of Al/Li ratio;the trans-1,4 content of polyisoprene increased from 24%to 46%as well as 3,4 content along with the increasing of Al/Li ratio;the microstructure of polystyrene was invariable and atactic.

加热器主要研究结果及结论如下：随着Al/L i的增加，聚丁二烯的反式结构含量从50%增加到89%；聚异戊二烯的反式-1，4-结构含量从24%增加到46%，并且其3，4结构含量也有所增加；聚苯乙烯的微观结构基本没有变化，为无规聚苯乙烯。

P-π conjugated polyamic acid was synthesized by the poly-condensation of benzoguanamine and pyromellitic dianhydride under microwave irradiation. Then PAA was grafted with different side-chain containing azobenzol groups through azo coupling reaction.

选取苯代三聚氰胺和均苯四酸二酐为单体进行微波辐射溶液聚合反应，所得的聚酰胺酸与对位取代基不同的苯胺重氮盐偶合接枝，从而合成了一系列新的具有三阶非线性光学活性的侧链型聚合物。

The epoxidised cashew nut shell oil acrylate oligomer for UV curing materials was synthe- sized using epoxidised cashew nut shell oil and acrylic acid as main raw materials,N,N-dimethyl- benzylamine as catalyst and p-hydroxyanisole as inhibitor.

以N，N-二甲基苄胺作催化剂、对羟基苯甲醚作阻聚剂，环氧化腰果壳油和丙烯酸为主要原料合成了一种新型的紫外光固化预聚物——环氧化腰果壳油丙烯酸酯。

The influences of inter-crosslinker and ratio of polyurethane-polyether to acrylic resin on the hydrophilic coating were investigated.The experimental data show that when the initiator is ammonium ceric nitrate and the inter-crosslinker is divinylbenzene in the preparation of polyurethane-polyether,the amount of ...

实验结果表明，在聚氨酯-聚醚树脂的制备中，用硝酸铈铵作引发剂，用二乙烯苯作内交联剂，在丙烯酸树脂的制备中，引发剂量为单体总质量的1.00%，聚氨酯-聚醚树脂与丙烯酸树脂的质量比为15∶1，制备的树脂转化率高，涂料亲水性能优异。

Then bis chloroformate was reacted with aromatic amines under the appropriate solvent and appropriate catalyst, after removed the solvent to obtain one kind of new amine-terminated polyether.

以聚氧化丙烯为基础原料，与光气在合适的溶剂下经过传统的低温、高温两段法光气化反应合成氯甲酸二酯，然后再与芳香多胺在合适的溶剂和催化剂下反应，脱除溶剂后得到一种新型的端胺基聚醚。

As a foundation raw material, propylene oxide was reacted with phosgene use the process tradition method that mean low temperature and high temperature two phosgenation sections to synthesis bis chloroformate .

以聚氧化丙烯为基础原料，与光气在合适的溶剂下经过传统的低温、高温两段法光气化反应合成氯甲酸二酯，然后再与芳香多胺在合适的溶剂和催化剂下反应，脱除溶剂后得到一种新型的端胺基聚醚。

Based on hydrogen peroxide and ammonium persulfate as compounded initiating system,unsaturated vinyl monomers were used to directly copolymerize a new high range polycarboxylate water reducer structurized in carboxyl,esterquat and amido as main chain and in polyethylene glycol ether as side chain.

以过硫酸铵和双氧水为复合引发体系，采用不饱和单体直接共聚，得到一类主链为羧基、酯基、酰胺基，侧链为聚乙二醇醚基的新型聚羧酸高效减水剂，研究了共聚物的结构对分散性能的影响。

The metalorganic complex NaEu4 is prepared by europium and Dibenzoyl Methane. The coordination polymers Eu-DBM-PAA and NaEu-DBM-PSAA are synthesized by the reaction of NaEu4 with polyacrylic acid M(subscript r=5000and copolymer of acrylic acid and styrene M(subscript r=3000.

研究了铕和二苯甲醯甲烷形成的有机配体NaEu4与聚丙烯酸M(下标 r=5000）、聚M(下标 r=3000发生配位反应分别得到配合物Eu-DBM-PAA和NaEu-DBM-PSAA，得率分别为89.7%和87.3%。

Yulin Economic Development Zone Construction Co ., LtdEthylene glycol , popular name glycol, is the simplest and most important dihydric alcohol of fat family , an important basic raw material of organic chemical industry production , which is widely used in the production of polyester fiber and polyester plastics.

乙二醇俗称甘醇，是最简单和最重要的脂肪族二元醇，它在有机化工生产中是一种重要的基本原料，尤其广泛用于聚醋纤维、聚醋塑料的生产。

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。