短語詞組短語precolumn derivatization 柱前衍生化法;柱前衍生derivatization SPME 衍生化法;微萃取PMP derivatization PMP 衍生化microwave derivatization 微波衍生tryptophan derivatization 色氨酸衍生fluorescence derivatization 熒光衍生化PFPH derivatization PFPH 衍生化OPA derivatization OPA 衍生automatic derivatization 自動(dòng)衍生 返回 derivatization