substituent

英 [sʌb'stɪtʃʊənt] 美 [sʌb'stɪtʃʊənt]

• n. 取代

例句

用作名词 (n.)

1. The substituent effects of ethoxy groupswere studied on the chemical composition and properties of plasma polymers.
   研究了乙氧取代基对聚合物化学组成和性能的影响。
2. The fluorescence intensity of porphyrin also relates to the substituent positions on the phenyl groups.
   此外，荧光强度还与卟啉的苯环上取代基的取代位置有关。

词汇搭配

• donative electron substituent 供电子取代基因...
• fluoroorganic substituent 有机氟取代基...
• cyclic substituent 环式取代基
• electronegative substituent 电负性取代基...