styphnic acid

例句：

1. 1. The patient was given a dose of styptic acid to relieve his pain.
   患者被给予一剂量的烟酸酐以缓解他的疼痛。
2. 2. The doctor prescribed the patient an anti-inflammatory drug, which contains stypticacid.
   医生开给病人一种抗炎药物，其中含有烟酸酐。
3. 3. The chemical reaction between styptic acid and water produces nitric acid gas.
   烟酸酐与水之间的化学反应产生硝酸气体。