The present paper reports the contents of ursolic acid in Crataegus pinnatifida var.major before and after processing determined by CS-920 TLC scanner: 0.274% and 0.265%, coefficients of variation 1.180% and 1.150% respectively.是什么意思_The present paper reports the contents of ursolic acid in Crataegus pinnatifida var.major before and after processing determined by CS-920 TLC scanner: 0.274% and 0.265%, coefficients of variation 1.180% and 1.150% respectively.在线翻译_英语_读音_用法_例句