钽

例句：

1. 1. The alloy contains a small amount of tantalum to improve its strength and hardness.
   这种合金含有少量的钽以提高其强度和硬度。
2. 2. The researcher used tantalum powder to coat the surface of the sample.
   研究者使用钽粉对样品表面进行了涂覆。
3. 3. The tantalum is used in electronic devices for its excellent electrical properties.
   钽被用于电子器件中，因其出色的电学性质而受到青睐。