查询词典 olefins

It was pointed out that the production of olefins via ethanol is an alternative route for cracking naphtha.

指出由乙醇制低碳烯烃是传统石脑油裂解的一条可替代途径。

A catalyst and an improved process for producing olefins by catalytic naphtha cracking are described.

公开了一种由石脑油催化裂化生产烯烃的催化剂和改进的方法。

The reaction principle of reducing naphtha olefins and increasing diesel oil by FCC process was discussed.

探讨了催化裂化过程降低汽油烯烃含量和多产柴油的反应原理。

The light cut is lower in sulfur, higher in octane and higher in olefins than the heavy cut.

光裁减是低在硫磺，高在八炭烷里和高的在烯烃里比重的裁减。

The reaction mechanism of pure olefin compounds and that of olefins in gasoline under different conditions were analyzed.

在自制的微反-色谱装置上，进行了单体烯烃和催化裂化汽油在不同条件下的催化裂化反应实验。

Use of the invention catalyst to polymerize alpha-olefins is exemplified.

本发明的催化剂可用于聚合α－烯烃。

This invention relates to a primary catalyst component for polymerization of olefins and its preparation.

本发明公开了一种用于烯烃聚合的主催化剂组分及其制备方法。

Researches in photosensitized catalytic oxidation under irradiation of sodium lamp were reviewed, especially the characteristics and mechanism of photosensitized catalytic oxidation of olefins, alkylphenols and complexes and their application.

加强光敏催化氧化反应的研究，在一些重要的有机化合物或有机中间体的合成中具有重要的意义和广阔的应用前景。

In this paper, the carbonylation has been studied of olefins in different solvent systems.

本文研究了烯烃在不同溶剂体系中进行羰基化反应的规律。

Using extensie MS, U, and NMR spectral analyses, the structure has been established as compound 1, aureoerticillactam, a 22-atom macrocyclic lactam incorporating both triene and tetraene conjugated olefins.

运用包括质谱、紫外及核磁共振的多种光谱分析，解析确定了该化合物1的结构，是一个含有共轭三烯和共轭四烯的22元环大环内酰胺。

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。