烯烃

The reaction time has effect on the product distribution and olefine content of gasoline.

RFG-DQ催化剂和DOCO(1)都具有显著的降低汽油烯烃含量性能，但液化气收率增加，汽油收率下降，柴油收率上升。

Refining-chemical integration and increasing olefine production technology

炼油-化工一体化和增产烯烃技术

Usage: useful for pharmaceutical intermediate, especially useful for intermediate of synthesis aids inhibitor and metallocen catalyst for olefine polymerization.

用途：用作有机功能材料，医药合成中间体以及烯烃聚合用金属茂络合物催化剂配位体。。

Usage: useful for pharmaceutical intermediate,especially useful for intermediate of synthesis aids inhibitor and high temperature resistant resins and metallocen catalyst for olefine polymerization.

用途：用作各种医药合成中间体，特别是抗艾兹病药物，治疗糖脲病药物以及治疗心律不齐病药物的中间体以及烯烃聚合用金属茂络合物催化剂配位体和透明的耐热性树脂原料。

A process for preparing clean gasoline features that under existance of epoxidizing catalyst and alkoxylating catalyst, the olefine in gasoline and the oxygen and alcohol take part in epoxidizing and alkoxylating reactions to generate diolmonoether or dioldiether compounds which has higher octane number, so being excellent gasoline component.

本发明公开了一种清洁汽油的生产方法，在一个具有环氧化的催化剂以及同时具有烷氧化催化组分或者催化剂的存在下，汽油中的烯烃与氧、醇、发生环氧化、烷氧基化反应而生成二醇单醚或二醇双醚类化合物，这类化合物具有较高的辛烷值，是优良的汽油组分。

1 Heptane, it was revealed that the Cr〓/ Catsan and ZnCl〓 could catalyze the Michael addition of pyrrole with conjugate olefine at α-position of pyrrole to get mono- or bi-Michael addition product selectively under mild condition in good yield. Totally, forty-six new compounds, including thirty target compounds, were prepared.

在探索7-氮杂桥环母体的构建方法过程中，发现了Cr〓／Clay和ZnCl〓可有效地催化吡咯的α-位与多种共轭烯烃发生Michael加成反应，可在温和的条件下，以良好的收率选择性地得到单或双Michael加成产物。

They are sometimes difficult to differentiate from aromatic or olefinic absorptions.

有时它们就难于和芳香族或烯烃的吸收峰相互区别。

The effect of the rear two factors on the product distribution,olefinic content in gasoline and C 3 olefinicity in the commercial FCCU was investigated.

在工业装置上考察了终止剂用量和终止剂的注入位置对产物分布、汽油的性质和气体烯烃浓度的影响。

An olefinic resin composition having the specific range of density, melt flow rate, viscoelastic properties and melt tension is obtained.

本发明得到了一种烯烃树脂组合物，它具有特定范围的密度、熔体流动速度、粘弹性和熔体张力。

The process comprises polymerizing olefins in the presence of a supported indenoindolyl catalyst system and an organoboron or organoaluminum-treated solid.

该方法包括在茚并吲哚基载体催化剂体系和无机硼或无机铝处理的固体存在下聚合烯烃。

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。