pig iron (可算 及び 不可算; 複数 pig irons）
- (金属) 銑鉄。
- In general, pig iron and iron and steel scrap form the base of steel. (Mary Katharine Hickey. "History and development of stainless steel and stainless iron")〔1934年〕[1]
- 一般的に、銑鉄と鉄鋼スクラップが鋼の元となる。
- ↑ Mary Katharine Hickey (1934). History and development of stainless steel and stainless iron (M.B.A. thesis). Boston University. p. 30. https://hdl.handle.net/2144/21460
