Read Edit View history 异丁烷 yìdīngwán isobutane Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 异丁烷/異丁烷 · yìdīngwán · isobutane 2026/03/04 异丁烷 / 異丁烷 yìdīngwán isobutane isobutane 异丁烷常被用作制冷剂。 noun created sense Mar 4, 2026, 02:25 AM