By comparing the product ion mass spectra of oxypaeoniflorin with those of the unknown component under different collision energy, basic structure unit of the unknown component was determined.是什么意思_By comparing the product ion mass spectra of oxypaeoniflorin with those of the unknown component under different collision energy, basic structure unit of the unknown component was determined.在線翻譯_英語_讀音_用法_例句