Screening of Steroidal Saponins from the Bulbs of Lilium Brownii var. Colchesteri by Combination of High Performance Liquid Chromatography-Electrospray Ionization Mass Spectrometry and Electron Impact Mass Spectrometry是什么意思_Screening of Steroidal Saponins from the Bulbs of Lilium Brownii var. Colchesteri by Combination of High Performance Liquid Chromatography-Electrospray Ionization Mass Spectrometry and Electron Impact Mass Spectrometry在线翻译_英语_读音_用法_例句