Wordnet polsko-angielski 
                         (a furnace for making steel in which the steel is placed on a shallow hearth and flames of burning gas and hot air play over it) 
open-hearth furnace 
synonim: piec martenowski
synonim: marten
 (a furnace for making steel in which the steel is placed on a shallow hearth and flames of burning gas and hot air play over it) 
open-hearth furnace 
synonim: piec martenowski
synonim: marten