So, it is necessary to decrease the energy consumption of water pump for higher energy efficiency of open-loop lake source heat pump system.
室外循环水泵能耗对湖库塘开式水源热泵系统的能耗存在较大的影响，应该在实际工程应用中采取措施降低循环水泵能耗。
The road went in a huge loop around the lake.
那条路环湖绕了一个大圈。
The road makes a wide loop around the lake.
这条路环湖绕一个大圈子。
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