The most characteristic reactions of benzenoid arenes are the substitution reactions that occur when they react with electrophilic reagents. The electrophiles are either a positive ion (E+) or some other electron-deficient species with a large partial positive charge

A ring that contains at least one heteroatom (an atom other than carbon) is called a heterocycle, and a substance based on a heterocyclic ring is a heterocyclic compound. Heterocyclic compounds containing N, O or S are by far the most common

6.1 炔烃的结构 命名 和物理性质 Structure, Nomenclature, and Physical Properties of Alkyne

Compounds were classified as being either aliphatic or aromatic in the latter part of the nineteenth century. To be classified as aliphatic meant then that the chemical behavior of a compound was “fatlike”. To be classified as aromatic meant then that the compound had a low hydrogen/carbon ratio and that it was “fragrant

A UV-Vis spectrophotometer measures the amount of light absorbed at each wavelength of the UV and visible regions of the electromagnetic spectrum. λmax— the wavelength of maximum absorption

本章主要掌握的内容: 1常用物理量单位变换; 2.流体静力学方程的应用; 3伯努力方程的应用 4阻力计算; 5.孔板流量计的应用; 6.离心泵的结构、特性参数、特性曲线 及离心泵的安装高度的计算

本文分别介绍了三维及二维微凝胶胶体晶体组装的研究进展,并对已开发的基于微凝胶胶体晶体的应用进行了总结

第一节 概述 第二节 加氢脱氢反应规律 第三节 甲醇生产工艺 第四节 苯乙烯生产工艺 第五节 丁二烯生产工艺

1. Journal of the American ceramic society 2. Journal of the European ceramic society 3, Journal of Alloys and Compouds 1、陶瓷材料的发展概况 2、功能陶瓷的定义、范围和分类 3、功能陶瓷的性能与工艺特征 4、功能陶瓷的应用和展望 5、制备陶瓷材料的原料

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