high carbon steel

例句：

1. 1.This machine is made of high carbon steel, which makes it very durable.
   这台机器是用高碳钢制造的，因此非常耐用。
2. 2. High carbon steel is often used in the construction of bridges and buildings because of its strength and durability.
   由于其强度和耐用性，高碳钢常用于桥梁和建筑物的建设。
3. 3.The high carbon steel welding rod is suitable for welding thick plates, making it a popular choice for heavy-duty applications.
   我们使用的高碳钢焊条适用于焊接厚板，这使得它成为重型应用的热门选择。