形容词
中文翻译:多环的
同义词:
['polycyclic', 'polycyclicaromatic hydrocarbon (PCAH)', 'polycyclic olefin(POC)']
例句:
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1. Polycyclic aromatic hydrocarbons are a major source of airpollution.
多环芳香烃是主要的空气污染源。
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2.The PCAH in the oil isa significant contributor to air quality.
石油中的多环芳香烃对空气质量有显著贡献。
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3. The presence of POC inthe atmosphere has been linked to climate change.
大气中存在聚烯烃与气候变化有关。