查询词典 olefines

Olefinic oxides,such as epoxides,ketones and aldehydes mainly prepared by oxidation of olefines,are important chemical intermediates, which are widely used in fine chemicals,polymer materials,organic synthesis,perfumer and medicament.

烯烃的氧化物是重要的化工原料，主要通过烯烃的氧化反应得到，广泛应用于精细化工、高分子材料、有机合成香料及医药等行业。

And similar methods have been used for the estimation of trans-olefines in lubricating oils and in gasoline.

类似的方法也用于润滑和汽油中反式烯烃的定量。

The olefines (mainly C4 olefines)in the liquefied petroleum gas under the action of a selective catalyst were polymerized to form heigher molecular weight diners and trimers.

IMt石油液化气中的碳四烯烃在催化剂的作用下，选择叠合成分子量较大的聚合体。

Some technologies,including olefines from methanol,oxalates and ethylene glycol from carbon monoxide,carbon dioxide-based polymers,chemicals from the syngas prepared by biomass gasification,acetone and butanol by fermentation,and chemicals from acetylene,ethanol,glycerol,furfural,hydroxymethyl furfural and starch,were reviewed.

包括甲醇制烯烃，一氧化碳制草酸酯和乙二醇，乙炔化学品，二氧化碳聚合物，生物质气化合成化工产品，发酵法生产丙酮、丁醇，乙醇衍生化工产品，甘油合成化工产品，糠醛和羟甲基糠醛合成化工产品，淀粉合成化工产品等重要的石油替代化学品生产技术被介绍。

PAO can be obtained by mixing two kinds of olefines which have different average carbon in proportion with variance analysis.

充分了解到裂解烯烃的平均碳数分布对产品的粘度指数和凝点的显著性影响。

Although many methods on the oxidation of olefines to their derivatives were reported,there are many problems concerning low yield,catalyst lost,harsh condition,and serious pollution.

在现有的合成方法中，尚存在产率不高，催化剂流失，试剂昂贵，反应条件苛刻，环境污染严重等问题。

Experience of process plants could include gas processing, ammonia, methanol, hydrogen, olefines sulphur, polyethylene, and polypropylene.

具备工艺装置经验包括天然气工艺、氨、甲醇、氢、烯烃、硫、聚乙烯、聚丙烯等。

Catalytic thermal cracking technology, making use of VGO and residue as feedstock and solid acid catalyst which consists of ZSM-5 zeolite as major activity components, is a new process of producing low-carbon olefines composed of ethylene and propylene mainly under certain condition in FCC plant.

催化热裂解技术是以减压馏分油和渣油为原料，使用以ZSM-5分子筛为主要活性组元的固体酸催化剂，在催化裂化装置上，在一定的工艺条件下生产乙烯和丙烯为主的低碳烯烃的一项新工艺。

Progresses on reactions of NO, CAN, and hydrazone Reactions of NO with olefines, phenols, amines, arylhydrazines, Schiff bases and nucleosides are firstly reviewed.

本论文主要研究了一氧化氮及硝酸铈铵与简单醛酮腙、α，β-不饱和酮腙的反应，全文共分五个部分： 1、一氧化氮、硝酸铈铵及腙的反应研究首先对具有特殊生物活性的NO与烯、酚、胺、肼、Schiff碱、核酸碱基等有机物的反应做了全面的总结。

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。