Emphasis is on substitution and elimination reactions and chemistry of the carbonyl group.
重点强调取代，消除反应和含羰基基团的化学性质。
When sample preparation settles substitution aspiration normal hexane level gentrifugalism.
样品处理时以静置取代吸出正己烷层离心。
Study on application of acetyl starch with high substitution degree in modified PVAc emulsion
高取代度乙酰淀粉在改性聚醋酸乙烯酯乳液中的应用研究
Most direct substitution of groups bound to an aromatic nucleus is limited to diazonium salts.
大多数连于芳核能被直接取代的基团仅限于重氮盐。
General provisions for adoption, designation and substitution of archipelagic sea lanes, draft.
群岛海道的采纳、指定和替换规定草案。
The Application on Substitution of Equivalent Infinite Small in Algebra Sum's Limiting Operation
无穷小量的等价代换在代数和的极限运算中的应用
The international financial architecture would be greatly strengthened by a substitution account.
国际金融架构会因这个替代账户而得到极大加强。
THE RULE FOR AROMATIC NUCLEOPHILIC SUBSTITUTION REACTION AND THE ELECTRONIC EFFECT ON THE REACTION
芳香族亲核取代反应及电子效应的影响
Production of Low Alkali Cement by Substitution of Sandstone and Bauxite for Loess Clay Proportioning
砂岩和铝矾土替代黏土配料生产低碱水泥
It is usually best to avoid substitution of numerical values until the final formula has been obtained.
在得到最终公式以前最好不要代入数值。
Application of Chiral Ferrocene Ligands in Asymmetric Palladium Catalyzed Allylic Substitution Reactions
二茂铁配体在不对称烯丙基取代反应中的应用
Nucleophilic Aromatic Substitution. Strategies in the Synthesis of Multisubstituted Benzene Derivatives.
亲核性芳香取代。多取代苯衍生物合成的策略。
In this reaction, besides substitution products thiophenol etc, the reduction product benzene is formed.
反应中，除生成笨硫酚等取代产物外，还生成还原产物苯。
The trigonometric terms should be changed by the substitution of the equations involving the double angles.
用倍角公式代换三角函数项。
The author summarized nursing on radical cystectomy and an intestinal tract orthotopic bladder substitution.
笔者报道全膀胱切除原位新膀胱术患者的护理。
Feasibility Study on the Substitution Xenon Arc Lamp for Carbon Arc Lamp in Light Acceleration Weathering Test
光老化处理中氙弧灯替代碳弧灯的可行性研究
The main improvement the substitution of8031 single chip microcomputer for TP801 A single board microcomputer.
它是对80年代设计的汽车排气检测微型机系统的改造。
A linguistic analysis is made of nominal substitution, which is classified in this paper into three categories.
分析了英语中的名词替代现象并对其进行了分类。
Preparation of Cationic Starch of Higher Substitution Degree and Its Aqueous precipitating System for Water Control
阳离子淀粉的干法合成及其堵水调剖剂性能初探
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得有机合成反应。
The analystic method to calculate force in the equivalent substitution flank profile two tooth difference cycloid gearing
等效代换齿廓二齿差摆线轮的受力分析
A wide variety of different extrapolation techniques may be used for frame substitution in accordance with this disclosure.
广泛多种不同外插技术可用于根据本发明的帧代换。
The Contractor shall make no substitution of materials or modifications to details without the prior written approval of the employer.
未经业主事先书面批准, 承包商不得替换材料或修改细节。
If it beeps, you have command line editing see Appendix Interactive Input Editing and History Substitution for an introduction to the keys.
如果它发出蜂鸣声, 你可以使用命令行编辑
Comparing and Analysing on Models of Calculation and Statistical Testing of Nosynonymous Substitution Rate and Synonymous Substitution Rate during Gene Evolution
基因进化的同义与非同义替代计算及统计检验的比较分析
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