Read Edit View history 氰酸 qíngsuān cyanic acid Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 氰酸 · qíngsuān · cyanic acid 2026/03/04 氰酸 qíngsuān cyanic acid cyanic acid HCN 氰酸是一种具有挥发性的弱酸。 noun created sense Mar 4, 2026, 02:25 AM