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自凯氏定氮法问世以来,人们不断地从其分析速度上进行了许多改进。在使用高效的混合催化剂加速消化的基础上,近年来又
Since the advent of the Kjeldahl method, many improvements have been made continuously from the speed of analysis. Based on the use of highly efficient mixed catalysts to accelerate digestion in recent years