查询词典 elimination by substitution

Aminobenzoic acid was used to synthesize 4'-methyl-2-cyanobiphenyl, which was one of medicine intermediates, by diazotization, acylation, substitution, and dehydration.

以邻氨基苯甲酸为起始原料，经重氮化、芳基化、取代和脱水等步骤合成药物中间体4'-甲基－2-腈基联苯。

It can also can be used as substitution of gasoline and diesel oil in cleaning mechanical equipment.

并可替代用汽油、柴油清洁机械设备，是安全理想的新一代清洁产品。

It means that the minor difference of two DNA sequence is made of the substitution, insertion and so on.

SNP是人类基因组中最多的一种DNA多态性，是目前全世界开发的热点。

The hydrophobic association in heating process is not the same as the disassociation in cooling. Thermal gelation behavior is strongly influenced by the degree of substitution.

HPMC的两个取代基团对热凝胶过程的影响效果是相反的，羟丙基和水分子之间的氢键作用对预凝胶阶段的开始起着阻碍作用，而甲氧基则对凝胶阶段的大分子的疏水结合起促进作用。

However, there seems to be a substitution relationship between direct finance and indirect finance; that is, financial disintermediation may emerge as a result of asset securitization.

不过，就一般而言，间接金融与直接金融间似有替代关系，亦即资产证券化可能产生金融逆中介现象。

The mechanism was supposed as follows: polyfluoroalkyl iodides were initiated by sodium dithionite to give R〓 which was added to one double bond of diallylacetic acid, after the sequential radical cyclization and nucleophilic substitution to form bicyclo-lactones.

这是因为：多氟烷基碘化物在连二亚硫酸钠的引发下，得到自由基R〓，后者加成到二烯丙基乙酸中的一个—C=C—双键上，然后在碱性介质中进行分子内亲核反应得到双环内酯类产物。

Aniline compounds containing heptafluoroisopropyl was synthesized through taking sodium dithionite as evocating agent, and introducing heptafluoroisopropyl by free radical electrophilic substitution on benzene ring.

以连二亚硫酸钠为引发剂，在苯环上通过自由基亲电取代反应引入七氟异丙基，合成了一系列含七氟异丙基的苯胺类衍生物，研究了各种条件对反应的速度和收率的影响。

Polyfluoroalkyl iodides could react with unsaturated olefin acids in the presence of sodium dithionite by radical addition to give adducts. It was found that these adducts could form polyfluoroalkyl substituted γ or δ-lactones due to intramolecular nucleophilic substitution in the alkali solution.

研究发现：多氟烷基碘化物在连二亚硫酸钠存在下与不饱和烯酸经自由基加成得到的产物，能在碱性条件下进行分子内亲核取代反应形成五元或六元环的含氟内酯类化合物。

Ata small substitution(x=0.04),the perfect of Mn-O plane and the double exchange in-teraction are destroyed,which result in the decreasing of the transition temperatureof the charge-order state and the melting field within the sample.

在少量的替代下(x＝0.04)，起主要作用的是Mn-O面的破缺和对双交换作用的影响，表现为电荷有序态转变温度和低温下熔化场的下降。

Elasticity of substitution, price and wealth.

通常分析的是弹性的替代物，价格和财富。

The shaping method of noncircular part and the tool holder's radial motion characters in noncircular turning process are discussed in detail in the thesis.

论文详细研究了非圆零件的成型方法和加工过程中刀架的径向运动规律。

I have not really liked him,I do not like his this kind of disposition.

我没有真的喜欢他，我不喜欢他的这种性格。