“electrophilic aromatic substitution”的概念、定义、翻译、参考文献-科学参考

单词	electrophilic aromatic substitution
释义	electrophilic aromatic substitution Encyclopedia 理学芳香族亲电取代释 electrophilic aromatic substitution芳香族亲电取代反应芳香环系上的基团（通常是质子氢）被亲电试剂取代的反应。又称SEAr反应。 Chemistry ＞有机化学＞物理有机化学＞释义 electrophilic aromatic substitution芳香族亲电取代
随便看	positive definite function positive definite functional positive definite Hermitian matrix positive definite inner product axiom positive definite kernel positive definite matrix positive definiteness positive definite operator positive definite potential positive definite product positive definite quadratic form positive definite scalar product positive definite sequence positive definite solution positive definite space positive definite tensor positive definte rational fanction positive deviation positive diffeomorphism positive diffeomorphisms positive differential positive direction positive displacement compressor positive displacement flowmeter positive displacement motor drill

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。