单词	diene
释义	diene /ˈdʌɪiːn / noun Chemistry An unsaturated hydrocarbon containing two double bonds between carbon atoms.They had reacted a conjugated diene with a simple alkene to generate a cycloalkane.... The formation of conjugated dienes occurs when free radicals attack the hydrogens of methylene groups separating double bonds and leading to a rearrangement of the bonds. They found that the lead catalyst was effective in reacting the well known Si-containing reagent Danishefsky's diene with various aldehydes to produce dihydropyrone hetero-cycles. Origin Early 20th century: from di-1 'two' + -ene.
随便看	scientificalness scientific calculator scientific creationism scientific creationist scientific farmer scientific farming scientific humanism scientific humanist scientificism scientificity scientific journal scientific Latin scientific management scientific method scientific misconduct scientific name scientificness scientific notation scientific racism scientific revolution scientific romance scientifics scientific socialism scientific socialist scientifiction

英语词典包含243303条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。