单词	isobutylene
释义	isobutylene /ˌʌɪsəʊˈbjuːtʌɪliːn / /ˌʌɪsəʊˈbjuːtɪliːn / noun [mass noun] Chemistry An easily liquefied hydrocarbon gas used in the making of butyl rubber. Chemical formula: (CH3)2CCH2. Electrophilic addition of the t-butyl cation to isobutylene completes the process and regenerates the t-butyl cation.
随便看	unibrowed unicameral unicast UNICEF unicellular unicity Unicode unicolor unicolored unicolour unicoloured unicom unicorn unicorn fish unicorn root unicum unicursal unicuspid unicycle unicyclist unidea'd unideal unidealised unidealized unidentate

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。