求翻译：防水工程做完以后，需做闭水试验验收防水质量。方法是封好门口及下水口，在卫生间沉箱蓄满水，并做上记号，24―48小时之间液面若无明显下降，并且楼下住家的房顶没有发生渗漏，即为合格。而对于墙体防水施工的验收，应采取淋水试验，即使用水管在做好防水涂料的墙面上自上而下不间断喷淋3分钟，4小时以后观察墙体的另一侧是否会出现渗透现象，如果无渗透现象即可认为墙面防水施工验收合格。是什么意思？

Waterproofing works done after the inspection to be done to test water quality of closed water. Method is to seal the door and drain, the water fills the caisson in the bathroom, and marking the liquid level between 24-48 hours without significant drop in home's roof and downstairs there is no leaka

Waterproofing done, needs to be done after acceptance waterproof closed water quality tests. Methods are sealed and the door in the bathroom, inlet caisson deliberately filled with water, and do mark, liquid level between 24 - 48 hours if there is no obvious decline in downstairs, and there is no ev

After the waterproof project completes, must do shuts the water test approval waterproofing quality.The method is seals the entrance and under the drainage opening, gathers the full water in the bathroom caisson, and makes the symbol, between 24-48 hour liquid level if drops not obviously, and under

After waterproof finish, waterproof quality closed water test acceptance needs to be done. Method is to seal the door and into the water, in the bathroom caisson stored-full of water, and takes on, surface between 24-48 hours if there are no noticeable decline, the roof and downstairs dwelling there

Waterproofing works done after the inspection to be done to test water quality of closed water. Method is to seal the door and drain, the water fills the caisson in the bathroom, and marking the liquid level between 24-48 hours without significant drop in home's roof and downstairs there is no leaka