道路养护 meaning in English

road ma intena nce
road maintenance

Application of emulsified asphalt in the highway maintaining
乳化沥青在道路养护中的应用
Maintenance machine safety control system
道路养护车燃气安全控制系统
1 2 technical code of urban road maintenance
城市道路养护技术规范
Optimizing maintenance decision - making of highway with undetermined attribute
具有不确定属性的道路养护决策优化
Road maintenance equipment and products - absorbents intended for road usage - specifications
道路养护设备和产品.道路用吸收剂.规范

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