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1·Olefin gas closely approximates air.

烯空气跟空气十分近似。《新英汉大辞典》

2·Olefin gas closely approximates air .

烯空气跟空气十分近似。

3·Process flow of olefin conversion unit is introduced.

对烯烃转换工艺技术作了介绍。

4·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。

5·High gaseous olefin yields are the main features of DCC and MGG technologies.

多产气体烯烃是DCC和MGG工艺的主要特点。

6·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。

7·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。

8·Metallocene catalysts are replacing traditional catalysts in syntheses of olefin polymers.

在烯烃聚合物合成中茂金属催化剂正在替代传统催化剂。

9·Effects of FCC technological conditions on gasoline olefin content were also investigated.

与此同时考察了催化裂化工艺条件对汽油烯烃含量的影响。

10·These fabrics are made of such fibers as polypropylene, olefin, polyester, nylon, and acrylic.

这些织物使用的纤维有：聚丙烯、烯烃、涤纶、尼龙以及丙烯腈纤维。

烯烃

1·These fabrics are made of such fibers as polypropylene, olefin, polyester, nylon, and acrylic.

这些织物使用的纤维有：聚丙烯、烯烃、涤纶、尼龙以及丙烯腈纤维。

2·Robert H. Grubbs, an American chemist, was born in Kentucky in 1942. In 2005, he received the Nobel Prize in Chemistry for his work on olefin metathesis.

罗伯特·格拉布，美国化学家，1942年出生于肯塔基州，2005年因“烯烃复分解反应”的研究而获得诺贝尔化学奖。

3·High gaseous olefin yields are the main features of DCC and MGG technologies.

多产气体烯烃是DCC和MGG工艺的主要特点。

4·The light constituents flow upward to the catalyst zone, where the selective hydrogenation of butadiene is carried out together with desulfurization and some olefin saturation.

轻组分向上流至催化剂段，在那里丁二烯选择性加氢、脱硫和一些烯烃的饱和同时进行。

5·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。