英语释义

1. an atom or group that replaces another atom or group in a molecule

片语

substituent eff取代基效应

substituent ds取代度

substituent characteristics取代基性质

electronegative substituent电负性取代基

supplanter排挤者，取代者；代替者

biphenyl substituent联苯基

Lateral substituent侧取代基

substituent uniformity取代基均匀度

negative substituent阴性取代基

substitutional group取代基

substituent constant取代常数

英汉例句

• The healthy soy sauce was produced with mixed strain fermentation through using oat and residual biomass of beer substituent for soybean powder.

  对以燕麦和啤酒废弃生物质替代部分豆粕为原料，利用混合菌种发酵酿造保健酱油进行了研究。

• Excellent selectivity was obtained for the separations of polar position isomers. The benzamide substituent group on crown ether makes the stationa…

  由于冠醚上引入苯甲酰胺取代基，因而对苯胺类及不经衍生化的堿性化合物能特殊选择性地分离。

• The absorption, emission maximum and the fluorescence lifetime changed as the Hammett substituent constant in folding linear.

  最大吸收、最大发射、及荧光寿命与取代基的哈密顿取代基常数呈折线关系。

• These clusters show different fluxional behaviour and ligands according to various substituent around the metals of osmium.

  根据羰基配体取代基的不同，该类簇合物中小分子的移动种类及方式也有所不同。

• The results show that the formation of dimers depends on the nature of substituent group, dielectric constant of solvent, and concentration.

  结果表明二聚体的形成取决于取代基团的性质以及溶剂的介电常数与溶液浓度。

• The results showed that chloric substituent in polymer chains prevented the chains from further chlorination.

  结果表明，大分子链上的氯取代基对分子链进一步氯化起阻碍作用；

• The substituent effect was discussed.

  并对取代基效应作了解释。

• The relationship between yields and substituent groups was described and the possible mechanism was discussed.

  讨论了底物取代基与产物收率的关系，推测了反应机理。

• A liquid crystalline epoxy monomer with long lateral substituent was cured with anhydride and the cure kinetics was investigated by non-isothermal DSC technique.

  采用非等温差示扫描量热法(dsc)研究了一种长侧链取代液晶环氧单体与甲基六氢苯酐的固化反应历程，考察了体系的固化反应动力学特征。

• Positive charges and substituent size in TPM dyes may be two important factors in influencing the binding stability of the dyes and G-quadruplexes.

  此外，还发现TPM染料所带的正电荷数以及取代基的体积是影响染料和G-四链体结合稳定性的两个重要因素。

• The size and steric hindrance of substituent of porphyrin is one of the crucial factors to affect the interaction between porphyrins and DNA.

  吡啶取代基的大小和空间位阻是影响相互作用方式的关键因素之一。

• It was found that the substituent attached at the phenyl exerted influence on the yields of synthesis, on the experimental conditions of sulphonation and on the acid-base properties of the reagent.

  研究表明，芳醛上取代基不同对卟啉的合成、磺化和试剂的离解平衡等有一定的影响。

• This invention relates to a preparation method of substituent glutaric acid anhydride.

  本发明涉及取代基戊二酸酐的制备方法。

• These results indicated that a suitable substituent at the 2-position of pyridine ring and a well-fit group at the 3-position of acrylate were both essential for hi.

  生测结果表明在吡啶环的2位合适的取代基和丙烯酸酯的3位取代基的体积对除草活性至关重要。

• Furthermore, the migration ability of substituent of ketone had a significant impact on selectivity.

  同时，迁移集团的迁移能力也对反应的选择性有很大的影响。

• The electronic structures of polyindenoindenes (PInIn) and their derivatives have been studied by self - consistent - field crystal orbital method. The substituent effect is also discussed.

  用自洽场全略微分晶体轨道法对聚茚并茚及其取代衍生物的电子结构进行了计算研究，探讨了取代基效应。

• Results showed that this kind of compounds has excellent photobleaching property. The bleaching effect of phthalocyanines containing halogen substituent is better than the one that is not substituted.

  结果表明该类化合物具有很好的光学漂白性，含卤素取代酞菁的漂白效果明显好于不含卤素酞菁的效果。

• The product is high in degree of substitution, whose substituent distribute equally, has characteristics of high viscosity, high content of sodium, high acid-viscosity ratio.

  该产品的取代度高，取代基分布均匀，具有高粘度、高钠含量、高酸粘比、高盐粘比的特点。

• The tacticity of polymers is mainly influenced by the polarity of substituent group of vinyl monomer.

  作者认为影响聚合物等规度的因素主要是取代基的极性效应。

• The experiments show that large substituent group on Cp is favorable to the formation of CTSs with low ratio of ferrocenyl:POM.

  比较发现，茂环上的取代基越大越有利于二茂铁基阳离子与多阴离子之比小的电荷转移盐的形成。

• Results We obtained the epoxidation products of phenyl epoxy ethane. That with substituent on the benzene ring has higher yield, and that the substituent at 5-have higher yield than at 3 -.

  结果产物中有环氧化产物苯基环氧乙烷，催化剂苯环上有取代基的环氧化物产量高，取代基在5-位上的比在3-位上的环氧化物产量高。

• The invention discloses a preparation method of a benzofuran ketones compound containing indoles substituent groups.

  一种含吲哚类取代基的苯并呋喃酮类化合物的制造方法。

• In this paper, the correlations of the formation of dimers with solvent polarity, concentration, nature of substituent group and central metal were investigated.

  本文探讨了有关二聚体的形成与溶剂极性、溶液浓度、取代基团性质及络合金属原子的关系。