Results pancreatic and salivary amylases with high specific activity and high purity were obtained. The apparent molecular weights of pancreatic and salivary amylases were 55kd and 57kd, respectively.
结果获得了高比活性及高纯度的人胰型及唾液型淀粉酶，胰型及唾液型淀粉酶的表现分子量分别为55kd和57kd。
The properties, such as apparent density, specific surface, particle size distribution and activity of mechanical activated fly ash at different grinding time were studied.
研究了机械活化时间对粉煤灰的视密度、比表面积、粒度分布及活性的影响。
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