锇的

例句：

1. 1. Osmium is a rare and valuable metal used in jewelry and electronics.
   锇是一种稀有且珍贵的金属，用于珠宝和电子产品。
2. 2. The research on osmium has led to new discoveries in the field of chemistry.
   关于锇的研究已经导致了化学领域的新发现。
3. 3.Osmium is often used as a catalyst in chemical reactions due to its high reactivity.
   由于其高反应性，锇常被用作化学反应的催化剂。