三氢化磷

例句：

1. 1. This compound is a key intermediate in the synthesis of many organic compounds.
   这种化合物是合成许多有机化合物的关键中间体。
2. 2. The reaction involves the formation of trihydric acid and the release of hydrogen gas.
   该反应涉及形成三氢化物和释放氢气的过程。
3. 3. In this process, trihydric acid reacts with water to form an acid solution.
   在这一过程中，三氢化物与水反应生成酸性溶液。