进出水口有二个单向阀，水箱内置有浮球装置，该装置和二个单向阀共同起开关作用；
There are two one-way valves for water inlet and outlet, which cooperates with floating ball in water tank to play switch role.
同时对游泳池设计中循环周期、充放水时间的设定、池水的消毒、进出水口、溢水沟的设计等提出建议。
And also given some suggestion on swimming pool design about circulating period, setting time of water supply and discharge, disinfection of water in pool, design of inlet outlet and overflow slot.
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