除了修补全国的供水管道系统外，水处理的另一个发展趋势就是，只处理必须要处理的部分。
Besides fixing up the nation's pipes, the future of water is cleaning only what we need.
最近一次爆炸发生在7月4日，爆炸导致了煤气管道泄漏，而500米外，工人正在修补三天前的另一次袭击造成的破坏。
The latest bomb, on July 4th, caused a leak 500 metres from where workers were repairing damage from another attack three days earlier.
文章详细介绍了施工中对材料的接收、管道的安装、施工检查及修补处理等施工技术。
The article introduces in detail the construction techniques of the material receiving, pipe installation, construction inspection and repairing treatment.
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