Industrial waste slag means the open hearth slag, open hearth deposited slag and soaking pit slag etc They contain much iron and iron oxide, thus may be re covered and utilized for the sintering production.是什么意思_Industrial waste slag means the open hearth slag, open hearth deposited slag and soaking pit slag etc They contain much iron and iron oxide, thus may be re covered and utilized for the sintering production.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句