Polycyclic aromatic hydrocarbon (PAH) fractions in airborn particulates were quantitatively and semi quantitatively analyzed by GC MS.16 kinds of parent PAH were detected in airborn particulates.是什么意思_Polycyclic aromatic hydrocarbon (PAH) fractions in airborn particulates were quantitatively and semi quantitatively analyzed by GC MS.16 kinds of parent PAH were detected in airborn particulates.在线翻译_英语_读音_用法_例句