网站首页 词典首页
The energy gaps of the complexes were lessened in the presence electron - donating groups.
供电基存在时复合物的能隙变小.
互联网
Electron - withdrawing 2 - substituents electron - donating 3 - substituents of the phenyl ring are favorable for increased herbicidal activity.
苯环2位是拉 电子基,3位是给电子基有利于提高除草活性.
英汉翻译词典包含4367426条英汉汉英翻译词条，基本涵盖了全部常用英语单词及常用语的翻译及用法，是英语学习的有利工具。