The valve consists of a guard cage, spring, valve disc, retaining ring and seat. It can be combined with pipe fittings such as reducing couplings, drain elbows, etc.

阀由警戒装置、弹簧、阀碟、扣环和阀座组成，可以和许多管件连接，如缩径管接头、排水弯头等。

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Opening and closing of the mechanical seal and water seal combined floor drain are realized by the change of water flow entering the floor drain.

通过进入地漏水流的变化，实现机械密封与水封组合地漏的打开与关闭。

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A mechanical seal and water seal combined floor drain consists of a floor drain cover, a main floor drain body, a float and a hose type magnetic seal valve.

一种机械密封与水封组合地漏，由地漏盖、地漏主体、浮子和软管式磁力密封阀组成。

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China's thirst for industry and irrigation has combined with climate change to drain the aquifers, some of which hold fossil water that has lain undisturbed for millennia.

ECONOMIST: Bursting cities, bust infrastructure