铌的

例句：

1. 1. The material is made from niobium, which is a rare metal.
   这种材料是由稀有金属铌制成的。
2. 2. Theatomic number of niobium is50, which means it has fiveprotons and zero neutrons.
   铌的原子序数是50，这意味着它有五个质子和零个中子。
3. 3. Niobium is used inthe production of high-performancealloys and ceramics.
   铌用于生产高性能合金和陶瓷。