Method: Solid dispersion systems of ursolic acid in PVP-K30 or Poloxamer 188 were prepared by co-evaporation of the drug and PVP-K30 or Poloxamer 188 ethanol solution.是什么意思_Method: Solid dispersion systems of ursolic acid in PVP-K30 or Poloxamer 188 were prepared by co-evaporation of the drug and PVP-K30 or Poloxamer 188 ethanol solution.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句