metal purity

例句：

1. 1.The steel was of high metal purity, making it suitable for cutting tools.
   这种钢的纯度很高，适合做切割工具。
2. 2.Metal purity is an important factor in determining the quality of a material.
   金属纯度是决定材料质量的重要因素。
3. 3. The manufacturer claims that their product has a high metal purity, which is reflected in its durability.
   制造商声称他们的产品具有高纯度，这体现在其耐用性上。