1Research on Flow Structure and Power Spectrum in Fluidized-bed Dense Zone with Granular FilterMA Bi-zhong, ZHANG Shi-hong, LIU De-chang1-52Finite Element Analysis of Static Wall Pressure of SiloZENG Ding, HAO Bao-hong, HUANG Wen-bin6-103Quantum Doublets for Ultrafine ParticlesJIANG Xun-dong, HU Rong-ze11-124Method and Mechanism of Making Spherical Zirconia Particles from Inorganic Zirconium Aqueous SolsLI Mao-qiang13-185Mechanism Analysis of Impact Crushing of Harden Nano-aggregation Powder by Shock WaveZHONG Sheng-wen, JIAO Yun-bin, KUANG Jing-zhong19-226Study on Polymethylene Wax SuperfinesLI Qing-shan, XING Feng-lan, YU Tian-shi23-247Preparation of Superfine Powder by Method of Rapid Expansion of Supercritical SolutionLi Zhiyi25-288Methods of Preparation and Prospect in Application of Nano-powderLI Fang-yu, LIU Wei-ping29-329Application of Carr Index Method in Comprehensive Evaluating Properties of Coal PowderZHANG Peng33-3610Advantage of Roller Mill Applied to Pre-grinding of CementYue Yunlong, Qu Ya37-3911Application of Janssen Equation to Design of Cement SiloZhao Yi, Zhou Zhiqun40-4112Expo of China International Powder & Bulk Material Industrial Technology and Equipment18