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由合肥水泥研究设计院自动化所研制的SPC-51A微机控制器,于1991年9月3日在江苏省镇江市通过了由江苏省建材局组织的技术鉴定。
Developed by Hefei Cement Research Institute of Automation SPC-51A computer controller, on September 3, 1991 in Zhenjiang City, Jiangsu Province, adopted by the Jiangsu Provincial Bureau of Building Materials Technology identified.