Those drainage pipeline long under water will severely effect on the function of the drainage, and it will damage the city drainage systems in result.
这些排水管网长期受江水的淹没将严重地影响其排水设施的功能,进而导致排水系统的破坏。
参考来源 - 三峡工程对重庆城区排水系统影响及整治技术研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Based on reliability theory, a basic maths model of calculating the reliability of drainage pipe line is recommended for factual need of drainage pipe line design.
根据排水管网设计的实际需要，以可靠性分析理论为依据，提出可以用于排水管网可靠性计算的基础数学模型。
PE series plastic pipe production line is mainly used for producing pipe of water supply and drainage in the field of agriculture and construction, cable etc.
PE系列塑料管材生产线主要用于生产农用给排水管、建筑给排水管、线缆等产品。
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