NF P11-300-中文版
土方施工 - 公路基础设施的路面垫层和路堤施工时可用材料分类
Earthworks - Classification of materials available for the construction of road sub-bases and embankments
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Earthworks - Classification of materials available for the construction of road sub-bases and embankments
Earthworks — Classification of materials for use in the construction of embankments and capping layers of road infrastructures