荧蒽;多环芳烃(PAH);稠环芳烃;Fluoranthene;1,2-Benzacenaphthene 稠环芳烃;fused-ring aromatic compounds;condensed aromatics 多环芳烃;polycyclic aromatic hydrocarbon;PAH ..
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It was found that the coke precursor was mainly three ring aromatic compounds with a few of aromatic ethers.
实验结果表明：焦炭前身物主要由三环取代芳香化合物组成，并有芳醚类化合物存在。
Based on the infrared spectra, it is suggested that the scale insects waxy compounds are composed majorly by long-chain fatty alcohol and fatty acids and some compounds with aromatic ring.
此外，根据红外光谱特征分析，可以知道该虫蜡泌物的化学成分主要为长链脂肪酸、脂肪醇和一些带芳香环的化合物。
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