oxy-acetylene blowpipe oxy-acetylene flame oxy-acetylene welding oxyamide oxyanion oxy-benz cutting torch oxycation oxycellulose oxychloride oxychloride cement oxycoal gas oxy-coal-gas flame oxydizing flame oxyfluoride oxygasoline cutting torch oxygen absorption oxygen ambient oxygen analyiser oxygen apparatus oxygenate |
oxy-acetylene blowpipe ацетилено-кислородна горелка Търсената дума е намерена |