The extracting efficiency of ethanol refux extraction and acidolysis and ethanol extraction are almost the same (0.181% and 0.177% respectively), which indicates that ursolic acid is freely existed in Cornus officinalis.是什么意思_The extracting efficiency of ethanol refux extraction and acidolysis and ethanol extraction are almost the same (0.181% and 0.177% respectively), which indicates that ursolic acid is freely existed in Cornus officinalis.在线翻译_英语_读音_用法_例句