乙酰乙酸乙酯酮式与烯醇式互变平衡体系中烯醇式结构含量的差异分析
을선을산을지동식여희순식호변평형체계중희순식결구함량적차이분석
The differential analysis of the content of enol tautomer of ethyl acetoacetate in the isomerization equilibrium system