单词	Beckmann rearrangement
释义	Beckmann rearrangement noun Beck·​mann rearrangement ˈbek-mən-, -ˌmän- : a rearrangement by which a ketoxime [as the oxime (C6H5)2C:NOH of benzophenone] changes into an amide derivative (such as benzanilide) on treatment usually with phosphorus pentachloride or an acid Word History Etymology after Ernst O. Beckmann †1923 German chemist
随便看	productional productionist productions productive productive labor productively productiveness productivenesses productivities productivity productor productory products Productus proem proembryo proembryonal proembryonic proembryos proemial proems proenzyme proenzymes proepimeron proepisternum

英语词典包含469781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。