electron withdrawing group是什么意思_electron withdrawing group的意思_electron withdrawing group的翻译_electron withdrawing group怎么读_electron withdrawing group的音标_electron withdrawing group的发音_electron withdrawing group翻译器_electron withdrawing group的短语_electron withdrawing group速记技巧_electron withdrawing group的近义词_electron withdrawing group的反义词_electron withdrawing group的双语例句

双语例句

1、

The macroporous, strongly acidic, high thermally stable canon exchange resin catalysts were synthesized in the steps of polymerization of styrene and divinylbenzene, purifying copolymer, introducing electron withdrawing group, sulfonation and stabilizing active sites.

通过苯乙烯与二乙烯苯聚合、共聚物纯化、引入吸电子基团、磺化、活性基因稳定化过程，合成耐温强酸阳离子交换树脂催化剂。

互联网摘选

2、

The photodegradation experiment showed that the introduction of electron withdrawing group on methane chain would improve the photo-stability of the dye, while electron donating group would decrease the photo-stability.

三种染料与其母核染料的光降解对比试验说明，甲川链上引入吸电子基团使得染料光稳定性提高，而供电子基团则光稳定性下降。

互联网摘选

3、

In chapter 2, we designed and synthesized two novel series of organic dyes by incorporating NC-CH2-COOH as electron withdrawing group at the carbonyl positions of QA skeleton.

在第二章中，我们通过在QA骨架的羰基位置引入吸电子基团NC-CH2-COOH设计并合成了两个系列新颖的有机染料。

互联网摘选

4、

The catalytic system also showed good catalytic activity in the oxidation of other aldehydes. Benzaldehyde derivatives with electron-withdrawing group and aliphatic aldehydes were almost quantitatively converted into their corresponding acids.

应用此催化体系催化其它醛的氧化同样表现出较好的催化活性，有缺电子取代的芳香醛和脂肪醛几乎定量生成相应的羧酸。

互联网摘选

5、

By contrast, the exo adduct possesses a trans relationship between the dienophile electron-withdrawing group and the trans diene substituent.

相反，不能进行成环加成反应的反应物有吸电子基团的二烯和二烯烃取代物具有反式结构。

互联网摘选

6、

The [ ( 4-fluoro phenyl) methoxy] acetic acid derivatives ( 5~ 9) were prepared in order to compare electron withdrawing group F with Cl, Br and I in substituted ( phenyl methoxy) acetates the effects of tor learning and memory facilitation in mice.

为研究吸电子基-氟，对苯甲氧基乙酸酯类小鼠学习记忆促进作用的影响，合成了（4-氟苯甲氧基）乙酸衍生物（5～9）。

互联网摘选

7、

Substitution of the aromatic hydrogen atom of the Schiff base ligand with electron withdrawing group decreased the amount of the complex encapsulated in the zeolite cavities, but could improve the catalytic activity of the encapsulated complex.

席夫碱芳环上的H被吸电子基团取代后，降低了Y分子筛超笼中封装的钴配合物的量，但能改善催化活性。

互联网摘选

点击展开全部例句

相关词组

free electron自由电子;
discussion groupn.讨论组;
control group控制栏，控制组;
age groupn.年龄组;两个年龄段之间的人;
default group缺席组，补缺组;
crystal group聚合晶体，晶群;
ethnic groupn.同种同文化的民族;人种;
electron beam电子束;
a group of一群（人、虫、兽等）;帮;
electron tuben.真空管，电子管;
blood groupn.血型;
CDC group[医]CDC群;
group work小组作业;
device group设备组;
electron microscopen.电子显微镜;
electron volt电子伏特;
block group块组;
focus groupn.（销售）讨论组;
Internet Group Multicast Protocol互联网群组多播协议
electron cloud电子云;

今日热词
热门搜索

refrigerator[rɪˈfrɪdʒəreɪtə(r)] n.冰箱;冷藏库;制冰机，冷冻机;
vamos['væməʊz] abbr.Verified Additional Military Occupational Specialty 经过验证的其他军事专业职业;瓦莫斯;我们去
separately[ˈseprətli] adv.分别地，另行;分开，单独;分离地;个别地;
commitment[kəˈmɪtmənt] n.信奉，忠诚;承诺;已许诺的事;献身;投入;花费;
solemn[ˈsɒləm] adj.庄严的，严肃的;庄重的;隆重的，神圣的;忧郁的，阴沉的;
disadvantage[ˌdɪsədˈvɑːntɪdʒ] n.劣势;障碍;不利因素;
achieve[əˈtʃi:v] vt.取得;获得;实现;成功;vi.达到预期的目的，实现预期的结果，如愿以偿;
redirect[ˌri:dəˈrekt] vt.使改变方向;改寄，改变投递方向;（以新的方式或目的）重新使用;使改变路线（或航线）;把（钱或精力）改用在别处;更改（信件等）上的地址adj.〈律〉再直接（询问）的
quilt[kwɪlt] n.被子，棉被;被状物;v.缝（被）;用垫料填塞后缝拢;东拼西凑地做;用摘抄等方法编辑;
formal[ˈfɔːml] adj.正式的;正规的;方式上的;整齐的;
army[ˈɑ:mi] n.军队;陆军;团体;野战军;
Just so you know[dʒʌst səʊ ju nəʊ] 如你所知;要你知道;你现在知道了;只是要让你知道;要让妳了解

skillful[ˈskɪlfl] adj.灵巧的;制作精良的;
heavily[ˈhevɪli] adv.在很大程度上;沉重地;魁梧地;缓慢而忧郁地;重载地;
trunk[trʌŋk] n.树干;主要部分, 主干, 主体;（汽车后部的）行李箱, 后备箱;（人、动物的）躯干;管道, 导管, 通风管;<解>大血管, 神经干, 淋巴干;象鼻;<船>围壁通道;大旅行箱, 大行李箱;男式游泳裤;<矿>洗矿槽;<主英> 男用短衬裤adj.主干的, 干线的;树干;树干的;躯干的, 躯体的;;管形的, 筒形的;（大）旅行箱的; <美> 汽车后部行李箱的
settle[ˈsetl] v.结束（分歧）;庭外和解;结（账）;（使）坐下;（使）沉降;安排好;定居;注视着;降落;n.高背长椅;
poi[pɔɪ] n.波伊;淀粉糊（浆）
husky[ˈhʌski] adj.嗓子哑的;深沉沙哑的;魁梧的;高大威猛的;强壮的;n.哈士奇;强壮结实的人;爱斯基摩狗(高大强壮，毛厚，用来拉雪橇)
save[seɪv] v.保存;节省;储蓄;拯救;救;挽救;保留;避免，免得;收集;救助;攒钱;收藏;救球（阻碍对方得分）n.（守门员的）救球;
seek[siːk] v.寻找;谋求;请求（帮助），征求（意见）;想方设法;
put away[put əˈwei] 收起来; 放好;储存;打消;
place[pleɪs] n.地方;城镇;场所;…地方;表面的某处;某点;座位;地位;入学机会;队员身份;恰当位置;适当处所;名次;住处;（数学）位;广场名称;adv.到处;
correspondence[ˌkɒrəˈspɒndəns] n.来往信件;通信;相似;通信联系;相关;往来书信
wake me up[weik mi: ʌp] 叫醒我;