substituent effect 取代基效应
negative substituent 阴性取代基
Substituent Effects 取代基效应
substituent constant 取代常数 ; 取代基常数
positive substituent 阳性取代基
Electron-donating Substituent 供电取代基
electronegative substituent 电负性取代基
Lateral substituent 侧取代基
While it is known that 3-or 4-substituent on coumarins affects signifcantly fluorescent properties of coumarins, there were relatively few reports on 3-substituted coumarins by far.
研究表明3-位或4-位取代基对香豆素的荧光性能具有较大的影响,但有关3-位取代的香豆素的研究较少。
参考来源 - 三唑基香豆素的合成及荧光性能SLM is a kind of flavone mixture that has C-9 substituent. It efficiently cures hepatic injury caused by kinds of liver toxicants.
SLM是一类具有C-9取代基的黄酮类混合物,对多种肝脏毒物引起的肝脏损伤有明显的保护作用。
参考来源 - SLM静脉注射乳剂的研制·2,447,543篇论文数据，部分数据来源于NoteExpress
以上来源于: WordNet
N an atom or group that replaces another atom or group in a molecule or can be regarded as replacing an atom in a parent compound 取代基 [chem]
ADJ substituted or substitutable 取代的; 可取代的
The linear relationship between the gas phase standard enthalpies of formation and the substituent constants is discussed.
讨论了气态摩尔标准生成焓与取代基常数间的线性关系。
The substituent effect was discussed.
并对取代基效应作了解释。
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。
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