normalized and tempered steel

例句：

1. 1.The engineer used specialized equipment to produce normalized and tempered steel for the construction project.
   工程师使用专门的设备为建设项目生产正火和调质钢材。
2. 2. The company's new product line includes a variety of normalized and tempered steel products that meet the latest industry standards.
   该公司的新产品线包括多种符合最新行业标准的正火和调质钢材产品。
3. 3. The steel is used in various applications, including structural components and machinery parts, due to its high strength andtoughness.
   由于其高强度和韧性，这种钢材被广泛应用于各种应用中，包括结构组件和机械部件。