Most landscape fountains and waterfalls are closed system types that re-circulate water with an electric pump.
大多数景观喷泉，瀑布是封闭的系统类型，重新分发水电动泵。
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And we also have a residual heat removal system that also takes the heat from the torus and transfers that heat to an external source providing coolant water to continue to re-circulate the sprays.