indoor drainage facilities 室内排水设备
indoor drainage pipelines 室内排水管道
The causes of indoor drainage pipeline blockage are analyzed from three aspects of design process, construction methods, post-use maintenance and effective prevention measures are proposed.
从设计过程、施工环节、后期使用维护等三方面分析室内排水管道堵塞的原因，并提出有效地防止措施。
It had incredible public amenities, footpaths, schools, an indoor bath, complex drainage and enclosed fields.
城里有难以置信的公共设施：人行道、学校、室内浴场、复杂的排水系统和围起来的农田。
Moreover, it analyzes the effect of earthquake to outdoor and indoor water supply and drainage equipments.
还分析了地震对室内外给排水设施可能造成的影响。
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