| 摘要 |
An aerating unit includes a container, a submersible motor disposed in the container and having a shaft which is provided with a propeller, an air conduit connected to an air supply at one end and extending into said container at the other end which defines an air outlet adjacent to and facing toward the propeller for introducing air toward the propeller, and a base disposed below and aligned vertically with the propeller in the container and having a curved surface which is convex in a direction toward the propeller for deflecting the air directed from the propeller in radial directions away from the curved surface.
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