Variations in the rate at which a brand-name and its generic (or two generics) release their active ingredient could court disaster with some drugs, as well.

对于某些药物来说，原创药物和仿制药（或两种仿制药）之间活性成分释放速率的差异可能导致灾难性的后果。

youdao

In chapter 2, the hydrolysis rate constant and activation energy of main active ingredient in Cortex Fraxini aesculin was studied.

论文的第二章详细阐述了中药材秦皮中的药效成分秦皮甲素的水解反应速率常数和反应活化能的研究。

youdao