Iskani niz je bil najden v PREVODIH:
Umluftsystem
en air recirculation system, forced air circulation-forced air ventilation, forced air circulation
Umluftverfahren
en air recirculation system, air return system, air return ventilation system
Umschaltventil
en air select valve, air switching valve, change valve, change-over valve, changeover valve, electric air switching valve, flow diversion valve, pilot valve, refrigerant reversing valve, reversing valve, spool valve, switch-over valve, switching valve, switchover valve