derivativelyadv.衍生地derivativen.派生物；衍生字；导数adj.派生的；(贬)非独创的；庸乏的derivative fluorescence spectroscopy阶导数荧光光谱derivative thermogravimetric analysis微分热重分析derivative photoaeoustic spectroscopy导数光声光谱Derivative ratio fluorescence spectra比值导数荧光光谱Derivative-Ratio Derivative Spectrum导数-比导数光谱derivative -ratio derivative spectrum导数-比导数光谱derivative concept and its introduction导数概念及其引入derivative spectrophotometry attachment微分分光光度测量附加器derivative differential thermal analysis微分差热分析derivative proportional integral control微商比例积分控制