查询词典 olefin

An adhesive composition comprises: at least one ethylene/a-olefin interpolymer, at least one tackifier; and optionally at least one additive, such as a plasticizer, wax and antioxidant.

本发明涉及一种粘合剂组合物，其包含：至少一个乙烯/α-烯烃共聚体，至少一个增粘剂；及的任选的至少一个添加剂，例如，增塑剂、蜡，及抗氧化剂。

Rheology-modified ethylene/alpha-olefin interpolymer, i.e., the resulting polymer blends, can be extruded or molded into many useful articles, such as films, sheets, profiles, gaskets; foams, etc.

经流变性改性的乙烯/α-烯烃共聚体(即，形成的聚合物掺合物)可被挤塑或模制成许多有用的制品，诸如膜、片材、型材、垫片、泡沫等。

It was found that more branch-2 olefin and C5~C6 isoparaffin molecules existed in MIP naphtha. The cause of MIP naphtha having higher octane number and less octane loss during hydrotreating could be explained by the octane model of C6 hydrocarbons quantitatively.

通过对MIP和FCC汽油组成分析，发现MIP汽油组成含有较多的多支链烯烃、异戊烷和异己烷，基于碳六烃的辛烷值模型，可以定量地解释MIP汽油辛烷值高和加氢MIP汽油辛烷值损失低的原因。

Tests of FCC naphtha upgrading were conducted under such optimum reaction conditions (with a reaction temperature of 450℃), as compared with the untreated naphtha the olefin content of the treated naphtha decreased from 40.74% to 25.80%, the contents of isoparaffin and aromatics increased significantly, the computed octane number was 5.48 unit higher, yet the naphtha yield dropped 14.25 percentage points and the LPG yield increased 13.52 percentage points.

在450℃的优化条件下，催化裂化汽油改质后，烯烃质量分数由40.74%降至25.80%，异构烷烃和芳烃含量有较大幅度的增加，计算辛烷值RON提高了5.48个单位，汽油收率降低了14.25个百分点，液化气收率提高了13.52个百分点。

Yet, completely differ from the cases of 〓-H, the 〓-dihydroxyl group was introduced after subsequent epoxidation and oxane ring opening of the 〓 tricyclic olefin.

在〓-β-H三环烯31基础上的环氧化和环氧开环反应引入的两个羟基，为双直立的〓，不同于〓类。

It is thus concluded that the methanol to olefin reaction cannot follow the oxonium ylide mechanism.

因此，甲醇制烯烃催化过程不可能遵循氧鎓叶立德机理。

Results of operation over two months had revealed that this catalyst had good olefin-reducing ability and heavy oil converting ability adapted to paraffinic feedstock.

结果表明，采用的5种助滤剂对抚顺石油化工公司石油二厂酮苯脱蜡车间的原料油都有好的助滤效果。助滤剂不同，其加入量不同，助滤效果也不同。

Brief introduction: The product is producted by using olefin base oil and many kinds of additive.

产品简介：本产品以精制的大庆石蜡基油为基础油，添加适量的抗氧、防锈、抗泡等添加剂调制而成。

SAPO 34 molecular sieve ; composite template ; hydrogen fluoride ; triethylamine ; methanol ; olefin

SAPO-34分子筛；复合模板剂；氟化氢；三乙胺；甲醇；烯烃

Alkylation reactions of thiophenic compounds with olefin contained in FCC naphtha on USY zeolite catalyst were investigated.

以USY分子筛催化FCC汽油中噻吩类硫化物与烯烃的烷基化反应，采用DL-2B-EE微库仑仪测定反应前后硫分布的变化，考察了USY分子筛的制备条件和烷基化反应温度对其催化性能的影响。

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。