polycyclic aromatic hydrocarbon
原始詞典資料1 筆記錄
這個字我們還沒有寫成教學內容。以下是外部詞典記錄的用法，原文照列，方便你先看懂它的意思。
polycyclic aromatic hydrocarbonnoun
- 1
chemistrynatural-sciencesorganic-chemistryAny of a class of organic compounds composed of multiple aromatic rings, many of which are found in coal and in oil deposits, and are produced by the combustion of organic matter.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。