classified scrap

• 分级废钢

classified scrap的用法和样例：

例句

1. About half of our new steel is old steel,otherwise known as scrap.
   我们大约有一半的新钢是旧钢，也叫作废钢。
2. However, the main material used in the EAF is scrap steel.
   然而，在电弧炉法中主要的原料是废钢。