查询词典 diene

The thesis consists of two main sections. The synthesis of 1,3,4-thiadiazoles,triazolotriazines and dioxapyrrolinopyrazoles containing chiral pyrazolyl moietyfrom D-glucose is described in the first part and the section one is about theDiels-Alder reactions between dienophile enaminones and diene 1,2,4-triazines,which provides a new methodology to construct the pyridine compounds. A total of37 new compounds were synthesized.

本论文包含两部分内容，一是以D-葡萄糖为原料合成含手性吡唑基的1，3，4-噁二唑、三唑并三嗪及二氧代吡咯啉并吡唑类化合物；二是将烯胺酮作为亲双烯体，与双烯体1，2，4-三嗪类化合物发生Diels-Alder反应，发现了一令人意外的构建吡啶类化合物的新方法。

Diamines are performed. An new and effective atom economy, domino reaction is developed, and 5, 6dihydro-4H-thieno [2, 3-b] thiopyran are synthesized by 4-(4-methyl-1, 3-dithiol-2-ylidene)-1, 7-diaryl-1, 6-diene-3, 5-dione

然后以4-[（4-甲基-1，3-二噻烷-2-亚甲基）-1，7-二芳基]-1，6-二烯-3，5-二酮类化合物为合成子探索稠杂环合成方法，并发现一个高效的，具有原子经济性的多米诺效应合成方法，并成功的利用其合成了一系列噻喃并噻吩衍生物。

Including high temperature for the pyrolysis of natural gas to produce carbon black and acetylene; steam reforming of natural gas or partial oxidation of natural gas, synthetic gas can be obtained; natural gas through chlorination, sulfide, nitrification, ammoniated oxide, oxidation can be obtained A N all kinds of derivatives; in the wet gas ethane, propane, butane and natural gas liquid condensate, and so on, the steam cracker or pyrolysis to produce ethylene, propylene and butadiene; dehydrogenation of butane oxidation or produce small Diene or acetic acid, methyl ethyl ketone, and maleic anhydride, and so on.

包括在高温下进行的天然气热裂解，主要生产乙炔和炭黑；天然气蒸汽转化或天然气的部分氧化，可制得合成气；天然气经过氯化、硫化、硝化、氨化氧化、氧化可制得甲烷的各种衍生物；湿性天然气中的乙烷、丙烷、丁烷和天然气凝析液等，经蒸汽裂解或热裂解可生产乙烯、丙烯和丁二烯；丁烷脱氢或氧化可生产丁二烯或醋酸、甲基乙基酮、顺丁烯二酸酐等。

It is a highly flexible rubber liner based on EPDM (Ethylene-Propylene-Diene terpolymer), a polymer used for the production of vulcanised elastomeric geomembranes.

乙烯-丙烯-二烯三元共聚物的高弹性橡胶膜，这种聚合体曾用于生产硫化弹性橡胶膜。

The special PP material for sound box is developed with polyolefin elastomer and ethylene/propylene/diene copolymer as the tougheners, polypropylene grafted with maleic anhydride as the compatibilizer and talcum as the inorganic fillers.

以聚烯烃弹性体和共聚物为增韧剂，马来酸酐接枝聚丙烯为增容剂，滑石粉为无机填科研制音箱用聚丙烯专用料。

Tocopherol, at the same working concentration, Copper-induced LDL oxidation was suppressed by the tamarillo phenolics in EA layer more effectively or compatible to DL--tocopherol, as measured by decreased formation of thiobarbituric acid-reactive substances assay, conjugated diene and electrophoretic mobility.

tocopherol 相类似的活性及氧化抑制效果，其相关的实验有：利用Cu2+离子诱导低密度脂蛋白氧化，并以硫代巴比妥酸反应物质（Thiobarbituric acid reactive substances ， TBARS）分析、延缓共轭双烯形成能力及电泳位移分析等试验进行评估。

The effects of ultrasonic irradiation on extrusion processing of polypropylene, PP/ethylene-propylene-diene monomer terpolymer blends and crystallization behavior of PP in different PP/nucleators system are studied.

本文利用超声-挤出装置和静态超声辐照装置，研究了挤出过程中超声作用对PP，PP/EPDM体系的流变行为，结构与性能的影响以及PP、PP/成核剂NaBz、MHS、NC-4、TM-1、Talc、Talc(KH及Mica体系在超声辐照作用下结晶行为的变化。

The company has first-class rubber production technology, clever use of rubber of the special performance, in accordance with customer needs, develop the design and manufacture of silicon, fluoride, ethylene propylene diene monomer and other special properties (high temperature, low temperature, electrical insulation, corrosion resistant chemical mediator, conductive, flame retardant, oil, etc.) all kinds of rubber products, but also the production of sponge rubber products (silicone sponge, other natural synthetic rubber sponge), product quality and tolerance of the appearance of the inspection of all sizes the production implementation of national standards for excellence Ministry of Chemical Industry corporate culture, enhance the competitiveness of my company.

本公司拥有一流的橡胶生产技术，巧妙地运用橡胶所具有的特殊性能，可根据客户需要，开发设计和生产硅、氟、三元乙丙等各种特殊性能（耐高温、低温、电绝缘、耐化学介质腐蚀、导电、阻燃、耐油等）各种橡胶制品，还生产海绵橡胶制品（硅胶海绵、其他天然合成胶海绵），产品外观质量及公差尺寸生产检验全部执行化工部国家标准优秀的企业文化，提高了我公司竞争力。

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。