长底炉的英文

• long bedded furnace

• 长:    older; elder; senior
• 底:    bottom; base
• 车底炉:    car bottom furnace
• 活底炉:    bogie furnace; bogie hearth furnace; car hearth furnace; car-bottom hearth furnace; live-bottom furnace; moving-hearth furnace
• 平底炉:    flat bottom furnace; flat bottomed furnace; hearth furnace