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| polyaromatic hydrocarbon; polycyclic aromatic hydrocarbon; polynuclear aromatic hydrocarbon | |||
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| polycyclic hydrocarbon; polycyclic hydrocarbon Hydrocarbon molecule with two or more nuclei; examples are naphtalene, with two benzene rings side by side, or diphenyl, with two bond-connected benzene rings. Also known as polynuclear hydrocarbon | |||
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| polycyclic hydrocarbons | |||
| polyzyklischer Kohlenwasserstoff: 15 phrases in 4 subjects |
| Chemistry | 9 |
| Environment | 3 |
| General | 2 |
| Natural resourses and wildlife conservation | 1 |