铬

例句：

1. 1.The steel is made from the most pure form of chromium.
   这种钢是由最纯净形式的铬制成的。
2. 2. Chromium is a chemical element with properties similar to those of titanium.
   铬是一种化学元素，其性质与钛相似。
3. 3. The alloy contains a small amount of chromium, which improves its strength and hardness.
   这种合金含有少量的铬，这提高了它的强度和硬度。