| 摘要 |
In a spa water circulation system, the spa (200) including wall structure (201) facing toward a water reception zone (202) and comprising a plurality of water pumps (203) associated with the wall structure, the pumps spaced about the zone, and oriented to receive water intake from the zone and to discharge water streams (205) into the zone; each pump including water pumping structure (207), and there being structure (210) for controlling pumping operation of the structure.
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