超细粉碎／分级系统设计要点盖国胜（清华大学工程力学系，北京，１０００８４）随着细粉体产品市场迅速扩大，对微粉体生产线和加工设备的需求也同时急剧增加。由于粉体技术和产品的跨行业性和经济体制转轨的现实，国家对此项新生产业无法实施有效的技术及行政管理。因为... Department of Engineering Mechanics, Tsinghua University, Beijing, 100084) With the rapid expansion of the market for fine powder products, the demand for soot-powder production lines and processing equipment has dramatically increased at the same time. Due to the cross-sectoral nature of powder technology and products and the fact that the economic system is being transformed, the state can not implement effective technical and administrative management of this new-born industry. because...