It was efficient to use Sephadex G 50 column chromatography and ultra violet absorption spectrometry atomic absorption spectrophotometry in isolation, and then it was followed by quantitative analysis of chromium binding substances.是什么意思_It was efficient to use Sephadex G 50 column chromatography and ultra violet absorption spectrometry atomic absorption spectrophotometry in isolation, and then it was followed by quantitative analysis of chromium binding substances.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句