A direct emission spectrographic Method is used for determing the trace elements Ba,Si,Fe,Mg,Pb,Al,Ca,Cu dnd Cd in metal strotium.是什么意思_A direct emission spectrographic Method is used for determing the trace elements Ba,Si,Fe,Mg,Pb,Al,Ca,Cu dnd Cd in metal strotium.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句