It was revealed by GC/MS measurements that alkanes, fatty acids and polycyclic aromatic hydrocarbons (PAHs) are of the major classes of organic pollutants as extractable and identifiable compounds.是什么意思_It was revealed by GC/MS measurements that alkanes, fatty acids and polycyclic aromatic hydrocarbons (PAHs) are of the major classes of organic pollutants as extractable and identifiable compounds.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句