building of slag

例句：

1. 1.The factory produces a lot of slag for the construction industry.
   这家工厂为建筑业生产大量的熔渣。
2. 2. The slag was used to make bricks and tiles.
   熔渣被用来制作砖块和瓷砖。
3. 3.The slag is a byproduct of the metallurgical process.
   熔渣是冶金过程的副产品。