常見(jiàn)例句雙語(yǔ)例句The utility model relates to a forge and press combined type central water-cooled oxygen lance spray head assembly, which belongs to the technical field of an oxygen lance of converter steelmaking.鍛壓組郃式中心水冷氧槍噴頭組件，屬於轉(zhuǎn)爐鍊鋼氧槍設(shè)備技術(shù)領(lǐng)域。ip.com 返回 spray lance