plain carbon tool steel

例句：

1. 1. Thistype of steel is commonly used in theconstruction industry.
   这种钢材常用于建筑业。
2. 2. The engineers used this plain carbon tool steel tomake the machine parts.
   工程师们用这种普通碳素工具钢制作了机器部件。
3. 3.The plain carbon tool steel was chosen forits strength and durability.
   选择这种普通碳素工具钢是因为它的强度和耐用性。