Việt
vòng hở
vòng mở
Anh
direct system
open system
open loop
Đức
offener Kreislauf
Pháp
système à chauffage direct
offener Kreislauf /m/VTHK/
[EN] open loop
[VI] vòng hở, vòng mở
offener Kreislauf /SCIENCE,ENG-ELECTRICAL/
[DE] offener Kreislauf
[EN] direct system; open system
[FR] système à chauffage direct