Read Edit View history 双键 shuāngjiàn double bond Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 双键/雙鍵 · shuāngjiàn · double bond 2026/03/04 双键 / 雙鍵 shuāngjiàn double bond double bond (chemistry) 乙烯分子中含有一个碳碳双键。 created sense Mar 4, 2026, 02:25 AM