The results showed that the dust organic extraction and its polycyclic aromatic hydrocarbons, organic acids, polar compounds increased micronucleus and SCE frequency significantly with a dose effect.
结果表明，粉尘有机提取物及其有机酸、多环芳烃、极性化合物可使微核率和SCE率显著增高，并有一定的剂量-反应关系。
This arc is made up primarily of organic compounds called polycyclic aromatic hydrocarbons, which glow on the surface of the cloud.
这个弧形主要是由多环芳烃的有机物构成的在云的表面发光。
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