pyrophosphoric 📖 中文释义 [医]焦磷酸 📘 English Definition(英文释义) a. Pertaining to, or designating, an acid, H4P2O7,which is obtained as a white crystalline substance. Its salts areobtained by heating the phosphates. ← pyrophosphodiamic acid P 字母词表 pyrophosphoric acid →