Read Edit View history 吡喃 bǐnán pyran Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 吡喃 · bǐnán · pyran 2026/03/04 吡喃 bǐnán pyran pyran (chemistry) 吡喃是一种含氧的六元杂环化合物。 noun created sense Mar 4, 2026, 02:25 AM