Aging urban water infrastructure featuring rusted metal pipes, blue valves, and a water meter assembly mounted against a cracked gray concrete block wall above a dirty drainage channel.图片
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Aging urban water infrastructure featuring rusted metal pipes, blue valves, and a water meter assembly mounted against a cracked gray concrete block wall above a dirty drainage channel.
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城市地下管道服务城市水暖自来水厂系统排水工业工程实用程序控制已损坏维护保养腐蚀泄漏老化基础设施没有人管道施工技术仪表金属暴露街道分布修理生锈混凝土突发连接蓝色绿色供应市政住宅下水道