Most manufacturers recommend constant recirculation of the pool water for at least three days.
大多数厂家推荐的池水不断循环至少三天。
A hot water recirculation loop makes hot water available "on demand," while reducing consumption.
热水循环管带是热水可以到达房间的每个地方，取用方便。
It may take a few days of recirculation to clear the water.
它可能需要几天的再循环净化水。
The water balance of landfill leachate recirculation in winter was studied emphatically.
着重研究了冬季渗滤水回灌的水量平衡状况。
The water balance of landfill leachate recirculation in winter was studied emphatically.
着重研究了冬季渗滤水回灌的水量平衡状况。
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