Yahoo奇摩字典 網頁搜尋

搜尋結果

1. Oxford Dictionary

   open-hearth process

   • n.
     a steel-making process in which scrap iron or steel, limestone, and pig iron are melted together in a shallow reverberatory furnace, the mixture being heated from above using gaseous fuel and air which oxidizes impurities in the iron.

   • noun: open-hearth process, plural noun: open-hearth processes