alloy content

例句：

1. 1. The steel alloy used in the construction of buildings is very strong and durable.
   用于建筑施工的钢铁合金非常坚固耐用。
2. 2. The analysis of the alloy content can help us understand the properties of the material.
   合金成分的分析可以帮助我们了解材料的物理性质。
3. 3. The alloy content of the steel is carefully controlled to ensure its strength and durability.
   钢的合金含量被严格控制，以确保其强度和耐久性。