group的例句大全

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。

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。

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。

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。

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。

Ester bond as an electron-withdrawing group could undergo as well, so the compound by ester bond connecting occurred more reduction process than ether bond connecting.

由于酯键作为一个吸电子基可以促进还原反应的发生，通过酯键连接的化合物比通过醚键连接的化合物出现更多的还原峰值。

The results showed that dyes with strong electron-withdrawing group, asymmetrical structure and short alkyl chain substituents have better bleaching properties.

结果表明，油溶性染料分子中，取代基团的吸电性强，不对称性大，取代基含脂肪链短的，其漂白性能好。

Poly ( 2,7-carbazole) derivatives, incorporated by electron-withdrawing group in the main chain, form a new low band gap photoactive donor materials.

聚2,7-咔唑材料的衍生物通过与吸电子基团共轭链接能够形成一类新型窄带隙光活性给体材料。

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。

The patients in group A didnt show breakthrough bleeding and too much bleeding after drug withdrawal.

组无突破性出血的表现,停药后无出血量过多等情况发生.

BHLH proteins of group F have cation binding and zinc ion binding activity especially.

F类蛋白有阳离子结合，尤其是锌离子结合活性。

Tomlinson was one of a group of scientists who were working on developing better computers.

汤姆林森是致力于发明更高级的电脑的一组科学家之一.

There it was noticed by the influential Silicon Valley blog TechCrunch and quickly came to the attention of an investment group led by Li Ka-shing.

正是在这里，它被极具影响力的硅谷《科技博客》（TechCrunch）所关注，并迅速引起了李嘉诚的投资集团的注意。

CATALYZED OXIDATION BY RHUS VERNICIFERA LACCASE ──ⅸ. On the laccase-catalyzed oxidation of catechols containing tert-butyl group

漆树漆酶的催化氧化作用&Ⅸ.含叔丁基的儿茶酚类底物的漆酶催化氧化

Since their dbut Weibo post on the 6th of November, Vietnamese pop-group HKT Band have attracted a staggering number of followers, over 60,000 at the time of writing and still growing.

自从11月6日在微博首度亮相后，越南流行组合HKT就吸引了数以万计的粉丝，截至发稿时，HKT的微博粉丝已经超过了六万。

Regitine was infused 0.1 mg/ kg 2 times per day in control group.

对照组则使用酚妥拉明0.1mg/kg，每天2次。

Y'all obviously made a group decision not to call and invite me.

你们大家显然集体决定不打电话邀请我.

Model group, only the neural scute was opened and the spinal cord was injured;

模型组：打开椎板，损伤脊髓；

The normal group: Haller index was 2.4 ± 0.3 and cardiac rotation angle was 49.4 °± 2.5 °.

正常对照组的Haller指数为2.4±0.3，心脏旋转角为49.4°±2.5°。

Results: The colporrhagia stopped within 3 days in the group treated with MPA and 83.33% abnormal echo with less than 1 cm could not be seen by the ultrasonography after the withdrawal bleeding.

结果：应用安宫黄体酮后3d内阴道出血停止，撤退出血后B超示宫腔内1cm以下的异常回声消失率达83.33%，与对照组比较差异有显著意义。