例句與造句

1. Slabs are the feed material for hot strip mills or plate mills and blooms are rolled to billets in a billet mill or large sections in a structural mill.
2. Last year, Bethlehem closed a blast furnace in Bethlehem, Pa ., and shipped steel to its structural mills from a more efficient arc furnace in Johnstown, Pa . It also closed the mill that made very big steel beams and confined itself to smaller products.
3. It's difficult to find structural mill in a sentence. 用structural mill造句挺難的