samarium

例句：

1. 1. The samarium is a rare metal that is used in electronics.
   钐是一种稀有金属，用于电子领域。
2. 2. The samarium is used to make the cathode of the fluorescent lamp.
   钐用于制造荧光灯的阴极。
3. 3. The samarium is also used in the production of steel alloys.
   钐还用于钢铁合金的生产。