利用Hartree—Fock方法在6-31G^＊水平上对聚苯分子进行了计算研究．分别从几何构型、分子轨道空间分布和分子轨道能级三个方面讨论了......

NiC12(bpy) catalyzed polycondensation between p-dibromobenzene and m-dibromobenzene has been carried outunder various co......

NiC12(bpy) catalyzed polycondensation between p-dibromobenzene and m-dibromobenzene has been carried outunder various co......

从聚苯板薄抹灰外墙外保温、现浇无网聚苯板外保温、面砖饰面外保温体系等方面分析了常见的外墙外保温体系产生裂缝的原因，提出了预......