Conclusion: The present results support the efficacy and safety of FFFFKL in alleviating the severity of acute withdrawal syndrome in patients with heroin addiction.

Cascade of triple-withdrawal zone-transport refiner

级联三重回收熔区传输区域精炼炉

Moral rights-the authors right to be recognized as the creator of the work in question; to prevent it from being used inadequately or in part; and to withdraw it from circulation if he so desires.

精神权利&是指作者使其著作权为人们所承认，并防止其作品被扭曲或损毁性篡改的权利。

Improve the exchange revenue and withdraw currency from circulation; In 1990s Foshan enterprises should mainly invest in Asian countries and in advanced foreign technology, new products and services.

是增加外汇收入、利用外资的新型方式。九十年代，佛山市企业应注重对东南亚国家的直接投资，对国外高科技，新产品、新服务部门和行业的直接投资。

Put forward the elasticity price system, items of currying out elasticity price system and measures of withdraw currency from circulation.

价格策略中研究提出了弹性价格制概念、实施弹性价格制的注意事项和加强货款回笼管理的措施。

MONEY HISTORICAL improve the exchange revenue and withdraw currency from circulation;

增加外汇收入与回笼货币；

Withdraw from circulation or form the market, as of bills, shares, and bonds.

收回纸币、债券、股票等，使其不再在市场上流通。

The expulsion shall become effective as of the date of receipt of notice of expulsion, and the expelled partner shall withdraw from the partnership. Alec decided to cash in as he realized he might spend his time and money more wisely.

被除名人自接到除名通知之日起，除名生效，被除名人退伙。亚历克认识到他可能把他的钱和时间花得更划算些，就决定退伙了。

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）。

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。

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。

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。

We use N-ethyl carbazole as the electron donating group, and the cyanoacetate as the electron-withdrawing group, connecting the two parts together by converting different II bridge bonds.

以n-乙基咔唑作为供电子基团，氰基乙酸为拉电子基团，通过变换不同的∏桥键来合成。

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。

To investigate the clinical characteristics of the alcoholic liver disease complicated with alcohol withdrawal syndrome, and to analyze whether the severity of alcoholic liver disease influence the performance of alcohol withdrawal syndrome.

探讨酒精性肝病患者中酒精戒断综合征的临床特点，并分析酒精性肝病的严重程度是否影响戒断症状的轻重。