hearthn.炉床；灶台；炉边hearth ring machine炉圈翻砂机hearth bottom cooler炉底冷却器Hearth cooling stave炉缸冷却壁hearth-bottom sand[机] 炉床底砂hearth-roaster gas多膛焙烧炉炉气hearth area efficiency炉床面积效率hearth inside diameter炉膛内径hearth and oven castings[机] 炉床及炉用铸件hearth mechanical equipment炉底机械设备Hearth back to Camp Mojache.炉石回摩哈杜营地。