The material of wall lining and back lining of industrial furnace and the sealing and insulation material of expanded gaps of furnace wall, furnace door, furnace top lid, etc是什么意思_The material of wall lining and back lining of industrial furnace and the sealing and insulation material of expanded gaps of furnace wall, furnace door, furnace top lid, etc在线翻译_英语_读音_用法_例句