单词	polynuclear aromatic hydrocarbon
释义	polynuclear aromatic hydrocarbon noun : polycyclic aromatic hydrocarbon Example Sentences Recent Examples on the Web Spokesman Nick Assendelft told the Free Press Monday that testing for polynuclear aromatic hydrocarbons, typically associated with oil and gas, were not detected at three sampling locations. Gina Kaufman, Detroit Free Press, 10 Dec. 2019 Word History First Known Use 1962, in the meaning defined above Medical Definition polynuclear aromatic hydrocarbon noun : polycyclic aromatic hydrocarbon
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