Hafnia

例句：

1. 1. Hafnium is a rare metal that is used in the production of high-performance alloys.
   铪是一种稀有金属，用于生产高性能合金。
2. 2.The chemical properties of hafnium make it an ideal material for use in cutting tools and other industrial applications.
   铪的化学性质使其成为切割工具和其他工业应用的理想材料。
3. 3.Hafnium is often used as a catalyst in the synthesis of organic compounds, as it has a high reactivity and can promote the formation of new bonds.
   铪常被用作有机化合物合成的催化剂，因为它具有较高的反应性和可以促进新键的形成。