Deep trench along city street surrounded by safety fence and warning signs, concept of road construction, repair and infrastructure safety.图片
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Deep trench along city street surrounded by safety fence and warning signs, concept of road construction, repair and infrastructure safety.
素材ID:1780630593

关键词

保护城市工作道路安全地下注意事项项目打开城市通信发展注意污垢接地沙子工程围墙维护保养危害海沟警告基础设施地坑没有人标志改进设备流程施工深度金属街道续订公共修理护栏开挖危险限制符号