火热的熔炉 Fiery Furnace

熔炉耐火材料 [炉窑] furnace refractories

熔炉、火炉 furnace

直火式熔炉 [炉窑] direct-fired furnace

熔铁炉火星罩 cupola spark arrester

熔铁炉点火器 cupola lighter ; cupola torch

火焰熔炉 Heating Furnace