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一九八一年七月二十一——二十二日,在上海由上海市高等教育局主持召开了多色发光大型状态显示板技术鉴定会。中国科学院长春物理所、上海冶金所、中国科技大学、河北大学、上海工业大学、复旦大学以及四机部1915所等二十多个单位共四十多位代
From July 21 to July 21, 1981, a technical appraisal meeting of multi-color light-emitting large-scale status display panels was held in Shanghai by the Shanghai Higher Education Bureau. Changchun Institute of Physics, Chinese Academy of Sciences, Shanghai Institute of Metallurgy, University of Science and Technology of China, Hebei University, Shanghai University of Technology, Fudan University and the Ministry of the Ministry of 1915 more than 20 units a total of more than 40 generations