Belüftung ÂEntlüftung ÂLüftung ÂLuftzufuhr ÂVentilation |
Belüftung Entlüftung Lüftung Luftzufuhr Ventilation |
aeration | the act of charging a liquid with a gas making it effervescent |
aeration | the process of exposing to air (so as to purify), the aeration of the soil |