washing basin and sewage sink 洗水池和污水槽
The article introduces principle of design and construction of HDPE film floating cover for sewage sink, construction of the cover, material selection as well as key points of its installation.
介绍了采用HDPE膜做污水池浮动盖的设计和施工原则，浮动盖的构成、材料选用和施工安装要点等。
Plug bathtub and sink drains to prevent sewage backup.
塞好浴缸与水槽的下水口，以免污水倒流。
Check to see that water and sewage lines are intact before using the toilet. Plug bathtub and sink drains to prevent sewage backup.
如厕前要检查水管与下水道管道，确保它们完好无损。塞好浴缸与水槽的下水口，以免污水倒流。
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