Aromatic compounds are easy to take place nucleophilic addition and nucleophilic substitution.

The first is extremely resistant to nucleophilic reagents.

前者极端地阻抗亲核试剂.

Directing Effects in Aromatic Substitution . Nucleophilic Aromatic Substitution . Strategies in the Synthesis of Multisubstituted Benzene Derivatives.

亲电芳香取代反应的定位效应. 亲核芳香取代反应. 合成多取代苯衍生物的策略.

The nucleophilic aromatic substitution for hydrogen reaction is an environmentally benign organic synthesis reaction.

芳香亲核取代氢反应是一种环境友好的有机合成反应.

A stepwise nucleophilic displacement involving 36 was highly unlikely.

涉及(36)的这种逐步亲核取代是不大可能的.

The nucleophilic ability of the amines had effect on the yields of the amines as well.

胺的亲核能力对醯胺的收率也有一定的影响.

Quaternarization is an important SN 2 nucleophilic substitution reaction; solvent has remarkable effect on it.

季铵化反应是一类重要的SN2亲核取代反应, 溶剂对该反应的影响很显著.

Having discussed the various special structural regions of the nucleus, there remains the nucleoplasm.

上面已讨论了核的各种特殊结构区域, 但未提及核浆.

The nucleoplasm is surrounded by the nuclear envelope.

核质被核膜包裹.

This paper summarizes the general separation techniques nucleoside compounds and the applications at home and abroad.

综述了国内外核苷类化合物分离技术及应用状况.

To study efficiency of nucleoside peptide nutrient on antioxidation function of rat by 3 dosage group.

目的采用核肽营养素三个不同剂量组来研究对大鼠抗氧化功能的影响.

The general features of nucleosome structure appear to be similar in all eukaryotes.

核小体结构的一般特性似乎在所有的真核生物中都很相似.

Fruit in large, color white, thin, juicy, Jardine less known nucleosome.

以果大 、 色白 、 皮薄 、 汁多 、 渣少、核小而著称.

Thymine or thymine nucleotide concentration was all disqulified.

胸腺嘧啶或胸腺嘧啶核苷均不合格.

The application progress on mass spectrometric analysis of nucleotide has been reviewed.

综述生物质谱用于分析核糖核酸的应用进展.

OBJECTIVE : To introduce the research progress of the antivirus agents nucleotide.

目的: 介绍核苷类抗病毒药物的研究进展.

Nucleotide takes part in the synthesis, and metabolism of genetic materials.

核苷酸可参与遗传物质的合成与代谢.

The nucleus accumbens is one of and it's also shown to be critical for experiencing pleasure.

大脑中心处的横沟就是结构之一,它也是人体验快感的结构.

Objective To study the reinforcing effect of the nucleus accumbens and ventral pallidum in rats.

目的探讨伏隔核和腹侧苍白球在药物强化中的作用.

The energy results from a loss in mass of the nuclide during its transformation.

这种能量来源于核素在蜕变时质量的损失.

Are there any nude scenes in the movie?

电影里有裸体镜头吗？