进水口在下部，而出水口在上部，良好的水循环没有二次污染。
The water inlet is arranged at the lower part while the water outlet is arranged at the upper part so as to realize excellent water circulation without secondary pollution.
进水口在下部，而出水口在上部，良好的水循环没有二次污染。
The water inlet is arranged at the lower part while the water outlet is arranged at the upper part so as to realize excellent water circulation without secondary pollution.
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