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1981年11月13日到11月28日在重庆市举办了全国激光科技成果展览,这是全国激光推广应用交流会议的一个部分。都是中国光
From November 13, 1981 to November 28, 1981, a national exhibition of laser technology achievements was held in Chongqing, which is a part of the National Laser Promotion and Application Conference. All are Chinese light