单词百科:electron-withdrawing是什么意思?electron-withdrawing怎么发音?electron-withdrawing的解释和

英语单词electron-withdrawing是什么意思?electron-withdrawing怎么读?electron-withdrawing怎么发音?英语巴士为您整理了electron-withdrawing的解释、用法、例句、词组等相关学习资料。下面跟小编一起来看看吧！

electron-withdrawing怎么读

electron-withdrawing的读音:[e'lektrɒnwɪðdr'ɔ:ɪŋ]

electron-withdrawing的意思

1、吸电子;

electron-withdrawing的相关词组

1、electron volt 电子伏特;

2、electron tube 真空管，电子管;

3、electron microscope 电子显微镜;

4、electron cloud 电子云;

5、electron beam 电子束;

6、free electron 自由电子;

7、valence electron 价电子，传导电子;

8、electron affinity 电子亲和性[势];

9、electron acceptor 电子接收体[受主];

10、electron accelerator 电子加速器;

11、electron burn （荧光屏）电子烧[斑]伤，用电子束烧穿;

12、electron sharing 电子共享;

13、electron coupler 电子耦合器;

14、coupled electron [化] 偶合电子;

15、shell electron 壳层电子;

16、electron hole 电子空穴;

17、withdrawing roll 拉辊（连铸）;

18、withdrawing child 退学儿童;

19、withdrawing device 拉轮器，抽出装置;

20、withdrawing needle [医]起针，排针，出针，引针，去针;

electron-withdrawing的双语例句

1、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.

2、Conclusions: The alkanes substituted phenolshigher antioxidant activity than that of electron-withdrawing groups substituted phenols.

结论: 烷烃基类取代物易于抗氧化,卤代烃基或硝基类取代物抗氧化活性差.

3、Only when the substrates with strong electron-withdrawing group were failed in this reaction.

只有当底物带有强吸电子基团，反应无法进行。

4、It can be provided with some information on studying of the relationship between physical properties and chemical structure by introduction of the electron-withdrawing groups to the nitrogen of aniline.

为进一步研究在氮的位置上引入吸电子基团的聚苯胺类衍生物的物理性质与化学结构之间的关系提供了依据。

5、The Electron-withdrawing effect of the Nitrogen Atom of Pyridine

吡啶环中N-原子的吸电效应

6、Electron-donating groups can increase the intensity of fluorescence, but the electron-withdrawing groups have opposite functions.

供电子取代基能增加卟啉的荧光强度，而吸电子取代基作用相反；

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