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由湖南省湘潭锰矿助理工程师杨振宇研制发明的矿井组合风幕机,继获得国家专利后,在“1992年北京中国新产品技术博览会”(4月)上荣获科技创新奖。
The coal-fired combined air curtain developed by Yang Zhenyu, an assistant engineer at Xiangtan manganese mine in Hunan province, won the award of “Technological Innovation Award” at the “1992 China Beijing New Product Technology Expo” (April) after obtaining the national patent.