A method was developed for determining residual clenbuterol and ractopamine in animal liver(tissues) using solid phase extraction(SPE) with gas chromatography-mass spectrometry(GC-MS).是什么意思_A method was developed for determining residual clenbuterol and ractopamine in animal liver(tissues) using solid phase extraction(SPE) with gas chromatography-mass spectrometry(GC-MS).在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句