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单词	perylene
释义	perylene noun per·​y·​lene ˈperəˌlēn plural -s : a yellow crystalline aromatic hydrocarbon C20H12 that is constituted of two naphthalene residues joined to each other through the peri-positions, that is found in small amounts in coal tar, and that can be made from naphthalene by the action of aluminum chloride Word History Etymology peri-di-naphthylene
随便看	PTC ptd pte Ptelea Ptenoglossa ptenoglossate pter pter- pteralia pteralium pteranodon pteranodons pteranodont pteraspid Pteraspidae Pteraspis pterergate pteres pteretes Pteretis pteretises pteretisses pteria pteric Pterichthyodes

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