substituents

substituents

美 　英

• n.代替者；【化】取代基

词形变化

复数：substituents  

英汉解释

n.	1. 代替者,取代者;【化】取代基

英英解释

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

例句

It follow therefore that the steric blocking effects of substituents are reflected in adverse kinetic, rather than thermodynamic factors.

由此可以看出，取代基的主本阻碍反应，是反映在违背动力学因素而不是热力学因素。

Their chemical and physical properties can be tailored by judicious selection of cation, anion, and substituents.

通过选择合适的阳离子、阴离子和配体，可以调变离子液体的化学、物理性能。

The method can synthesize paraquat derivatives containing different alkyl substituents by changing the type of ethanol.

该方法由于可以通过改变醇的种类，合成出含不同烷基取代基的百草枯衍生物。

The compounds with bulky substituents on N-atom preferably exist in keto form on the same condition of determination.

当氮原子上带有体积较大的取代基时，在相同的条件下，化合物更容易以双酮式构型存在。

Enols can be stable or even isolable by beating special substituents or in proper environments.

烯醇受环境因素和取代基的影响在一定条件下可以稳定存在。

However, the steric effects related to the substituents of PS and EVA cancels this catalytic behaviour.

然而，有关的PS和EVA取代基的空间位阻效应取消此催化行为。

The invention relates to compounds of formula (I) wherein the substituents are described in claim 1.

本发明涉及通式（I）的化合物，其中取代基如权利要求1中所述。

Flett has examined a series of anthraquinones with various substituents on the ring.

福莱特测试了一系列环上具有不同取代基的蒽醌。

All other substituents are as defined herein.

所有其他取代基如本文所定义。

The synthesis of tetrazolones and the influence of substituents on their herbicidal activities are summarized. 27 References are presented.

总结了四唑啉酮化合物的合成、取代基对母体除草活性的影响。参考文献27篇。

In the IUPAC system, alkyl and aryl substituents and many functional groups are named AS prefixes on the parent (for example, iodomethane).

在系统命名法中，烷基、芳基取代基和许多官能团被命名为前缀并放在一个母体的前面（例如：碘甲烷）

As results, 7 compounds with different substituents at para-position of 3-phenyl, and 20 derivatives of 3-animocoumarins were synthesized.

全文共合成7个3-位苯环上含不同取代基的目标化合物，以及20个3-位含氮衍生物。

Physicochemical Parameters of Substituents and Its Application in Quantitative Structure Activity Relationship for Drugs

取代基物化参数及其在药物定量构效关系中的应用

Synthesis and Application to NIR Absorbing Filter for NVIS-compatible Lighting of A Dithiolene Metal Complex NIR Dye without Substituents

无取代硫代双烯金属络合物的合成及其在夜视兼容技术中应用

Stability of a PPV Oligomer with Central Biphenyl Bridge and Peripheral Carbazole Substituents

外围带咔唑基的联苯桥联PPV齐聚物的稳定性

Study on Aggregation Behavior of Tetraphenoxyphthalocyaninatopallidium with Different Phenoxy-substituents

具有不同芳氧基取代酞菁钯聚集行为研究

Electronic Structure and Luminescent Property of Phenylenevinylene Dimers with Different Electron-releasing Substituents

带不同推电子基团二聚苯撑乙烯的电子结构与发光性能

Electrophilic and Ncleophilic Substitutions at Aromatic Rings, Reactions of Substituents of Aromatic Rings

第十二章芳环的亲电取代亲核取代反应芳环取代基的反应

Other derivatives containing only halogen substituents and their salts

其他仅含卤素取代基的衍生物及盐

A study of the directing effect of substituents

芳环上取代基定位效应的研究

Substituents Effect on the Structure and Electron Transfer Properties of Quinone

取代基对醌的结构及电子转移能力的影响

Influence of Substituents on IR Spectrum of Aromatic Amines in Different Solvents

不同溶剂中取代基对芳香胺红外吸收光谱的影响

Blood components and blood substituents

血液代用制剂及血液成份制剂

QSAR Studies of 2-Phenylindole Derivatives Using Physicochemical Parameters of Substituents

取代基物化参数用于2-苯基吲哚衍生物构效关系的研究

Effect of Substituents on Benzene Skeleton Vibration in IR Spectra

红外光谱中取代基对苯环骨架振动吸收峰的影响规律

R2 is an aryl group or a nitrogen atom-containing heterocyclic group each of which may have one or more substituents;

R2是芳基或含氮原子的杂环基团，它们各自可以具有一个或多个取代基；