首页>
外国专利>
Device for the introduction of gases in liquids (9) to, in particular of air into waste water, in the form of a rotor with a vertical shaft and on a hollow body arranged connecting pipes and blades
Device for the introduction of gases in liquids (9) to, in particular of air into waste water, in the form of a rotor with a vertical shaft and on a hollow body arranged connecting pipes and blades
