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第1期铝电解中示踪金属浓度递减律····1····...·······································……郑竹贤(1)模型辨识中两个方法与理论问题的探讨·······································?
Decrease in tracer metal concentration in the first stage of aluminum electrolysis 1 ·········································· ······························································································ ZHENG Zhu-xian (1) Discussion on Two Methods and Theoretical Problems in Model Identification ······························ ·······································?