英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字，中文词皆可：


请选择你想看的字典辞典：
单词字典翻译
undercovert查看　undercovert　在百度字典中的解释百度英翻中〔查看〕
undercovert查看　undercovert　在Google字典中的解释Google英翻中〔查看〕
undercovert查看　undercovert　在Yahoo字典中的解释Yahoo英翻中〔查看〕

安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • Olefin | Description, Characteristics, Types | Britannica
    Olefin, compound made up of hydrogen and carbon that contains one or more pairs of carbon atoms linked by a double bond Olefins are important commercial petrochemicals and are produced through various methods, including fluid catalytic cracking
  • What is an Olefin? - BYJUS
    What is an Olefin? Olefins, also known as alkenes, are hydrocarbons that feature one or more double bonds between two adjacent carbon atoms This term is generally used to denote the hydrocarbons that contain at least one double bond
  • Olefin: Definition, Types, Properties Examples Explained
    In chemistry, olefins are more commonly known as alkenes They are a class of unsaturated hydrocarbons, which means they contain at least one carbon-carbon double bond (C=C) in their molecular structure
  • Olefins in Petroleum Refinery - www. thepetrosolutions. com
    Olefins, also called alkenes or alkynes are compounds made up of hydrogen and carbon that contains one or more pairs of carbon atoms linked by double or triple bonds Olefins do not occur naturally but are produced in large refining and petrochemical conversion processes
  • Olefins: Learn Definition, Structure, Formula, Characteristics
    In organic chemistry, olefins are unsaturated hydrocarbons with two double bonds between the carbon atoms and are mainly composed of hydrogen and carbon Olefins include substances like 1,3-butadiene, propylene, ethylene, etc
  • Olefin - an overview | ScienceDirect Topics
    Olefin hydrocarbons (olefins, also called alkenes; general formula: Cn H 2n) are unsaturated hydrocarbon compounds which contain at least one carbon-to-carbon double bond (>C C<)
  • An Introduction to Olefins Petro Online
    Olefin is a compound comprising hydrogen and carbon, with at least one pair of carbon atoms Those atoms are linked by a double bond, which – along with the hydrogen and carbon content – makes them an unsaturated hydrocarbon
  • Get to Know Olefins the Uses in the Petrochemical Industry
    Olefins are one of the aliphatic hydrocarbon compounds having a double bond Generally, ethylene and propylene are two olefin products frequently used as raw materials in the petrochemical industry
  • Olefin - (Organic Chemistry) - Vocab, Definition, Explanations | Fiveable
    An olefin, also known as an alkene, is a type of organic compound that contains a carbon-carbon double bond Olefins are characterized by their high reactivity and play a crucial role in the context of intramolecular olefin metathesis, a powerful organic reaction
  • Olefin: Definition, Examples Quiz | UltimateLexicon. com
    An olefin (also known as an alkene) is a type of hydrocarbon that contains one or more carbon-carbon double bonds In organic chemistry, the general formula for olefins is C n H 2n Common examples of olefins include ethylene (C 2 H 4) and propylene (C 3 H 6)





中文字典-英文字典  2005-2009