英汉词典

1.Propylene copolymer, polypropylene composition, use thereof, transition metal compounds, and catalysts for olefin polymerization.

丙烯共聚物，聚丙烯组合物及其用途，过渡金属化合物和烯烃聚合催化剂。

2.The olefin cracking and the pentene isomerization over zeolites are two very important reactions in the petrochemical industry.

分子筛催化的烯烃裂解以及戊烯异构化是两个重要的石油化工过程。

3.The higher the olefin trap temperature, the lower the ability of adsorbing olefins.

烯烃的穿透性随碳数的降低和烯烃阱温度的升高而增加。

4.Application and preparation of a non - hydrogenation reducing - olefin catalyst were introduced.

介绍了一种非加氢降烯烃催化剂的制备及应用。

5.Supported catalysts of olefin polymerization were prepared by interacting magnesium alkyls with chlorinated agents, and electron donors.

由烷基镁、氯化试剂及电子给予体制备了烯烃聚合载体催化剂。

6.It was validated that ethylene is the origination olefin of methanol to propylene by experiments.

通过实验验证了乙烯是甲醇转化制丙烯过程中的起始烯烃产物。

7.We use synthetic materials such as nylon, polyester, acrylic or olefin.

用合成纤维，像尼龙、 多元酯、压克力或烯属烃。

8.Application and preparation of a non-hydrogenation reducing-olefin catalyst were studied.

研究了一种非加氢降烯烃催化剂的制备及应用。

9.The relationship between olefin content in gasoline and exhaust emission of gasoline engine is discussed.

讨论了汽油中的烯烃与发动机排放之间的关系。