| 释义 |
olefins 英'əʊlɪfɪnz美'əʊlɪfɪnz COCA³¹⁵¹¹¹⁺⁴BNC²³⁶²¹³⁺¹
基本英英例句例句
烯烃¹⁰⁰原型olefin的复数
名词 olefin:
any unsaturated aliphatic hydrocarbonPlants are sensitive to the simpleolefins, particularly C2H4.植物对简单烯烃是敏感的特别是乙烯。
With the higherolefins, stabilization of the energetic intermediates occurs more easily.在较高的烯烃情况下，高能的中间物稳定作用更易出现。 The application of supported catalysts in the oxidation of olefins to aldehyde and ketones was reviewed.
总结了固载化催化剂在烯烃氧化合成醛酮中的应用。 dictall
The development and application of the asymmetric epoxidation of olefins catalyzed by chiral ketones derived from fructose were reviewed with34 references.
综述了果糖衍生的手性酮催化烯烃不对称环氧化反应的发展及应用。参考文献34篇。 cnki
The development of the catalysts and the catalytic processes in hydroformylation of olefins was introduced. The catalytic properties of cobalt complexes and rhodium complexes were compared.
本文综述了烯烃氢甲酰化反应的催化剂从钴配合物到铑配合物和从均相催化体系到两相催化体系的发展过程。 cnki
The two main classes of petrochemicals are olefins and aromatics.
石化的两类主要产品是烯烃和芳烃。 yeeyan
At the same reactive condition, HZSM-5 catalyst not only has a higher activity to removing olefins by aromatization than HL catalyst, but also has excellent active stability.
在两者反应条件一致的情况下， HZSM-5沸石催化剂不但具有较好的烯烃芳构化活性，同时还表现出了良好的活性稳定性。 cnki
Catalytic cracking of olefins features simplicity in operation and low cost, and should be developed in preference.
烯烃催化裂化技术具有操作简单和成本低廉等优势，应加快研究开发。 chemyq
Change of mole selectivities of alkanes and olefins in products with reaction temperature was investigated.
考察了产物烷烃和烯烃的选择性随反应温度变化的关系。 cnki
Deep catalytic cracking processDCCis a newly developed process for the production of gaseous olefins, especially propylene.
催化裂解是以生产气体烯烃特别是丙烯为目的而发展的新工艺。 cnki
Enhancement of the quantity of strong acid sites is the trend in development of C4- olefins cracking catalysts.
尽可能提高催化剂表面强酸的酸量是 C4烯烃催化裂解制丙烯反应催化剂的研制方向。 cnki
Hydroformylation of olefins with different functional groups as Well as the effect of Solvent are also investigated.
溶剂也有显著影响，溶剂甲苯的结果最好。还考察了几种官能团烯烃的氢甲酰化反应。 cnki
In this paper, a kind of new catalysts for olefins hydroformylation was studied.
本论文研制了一种新型烯烃氢甲酰化催化剂。 cnki
Light olefins for industrial use. Determination of impurities by gas chromatography. General considerations.
工业用轻烯烃。用气相色谱法测定杂质的含量。一般考虑。 kuenglish
Meanwhile, coke yield increase and octane number loss should be considered when reducing olefins through hydrogen transfer reactions.
同时，在加强氢转移反应减少烯烃时，还需考虑焦炭选择性变差和汽油辛烷值下降的问题。 cnki
Normal alkanes in naphtha mainly generate such olefins as ethylene by cracking, but iso- alkanes are main source of manufacturing propylene.
在石化中，正烷烃裂解后产生烯烃多，如乙烯等，而异烷烃裂解主要用于生产丙烯。 unsv
Petroleum products. Determination of bromine number of distillates and aliphatic olefins. Electrometric method.
石油产品。蒸馏和脂肪烯烃的溴数测定。测电法。 tdict
Polymers of propylene or of other olefins, in primary forms.
初级形状的丙烯或其他烯烃聚合物。 china-customs
Polymers of vinyl chloride or of other halogenated olefins, in primary forms.
初级形状的氯乙烯或其他卤化烯烃聚合物。 china-customs
Refinery gases vary in composition but consist largely of hydrocarbons, both paraffins and olefins.
各种炼厂气的组成不同，但都含有大量烃类，包括各种烷烃和烯烃。 www.infopetro.com.cn
The first part of this thesis is about the oxidation of olefins catalyzed by AuCl.
本论文第一部分的内容为均相金催化剂在烯烃氧化反应中的应用。 dictall
The development in the oxidation of olefins to ketones catalyzed by palladium compounds was reviewed.
本文系统地评述了钯配合物催化烯烃氧化合成酮类物质的研究进展。 dictall
The hydrogen transfer reaction on the Y zeolite catalyst mainly takes place between gasoline olefins and naphthenes.
分子筛上发生的主要是汽油烯烃和环烷烃之间的氢转移反应。 cnki |