The invention adopts the impeller fluid self-drive method, the fluid drives the impeller to ensure that the boundary layer brushes rotate without external power;
本发明采用叶轮流体自驱动方式，由流体带动叶轮使边界层刷转动，无需外部动力；
The invention adopts the impeller fluid self-drive method, the fluid drives the impeller to ensure that the boundary layer brushes rotate without external power;
本发明采用叶轮流体自驱动方式，由流体带动叶轮使边界层刷转动，无需外部动力；
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