... elastic roadbed弹性道床 Roadbed material路基材料 width of roadbed路基宽度 ...
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properties of roadbed material 路基材料性能
roadbed soil material 路基土
roadbed embankment material 路基填筑材料
packing material of roadbed 路面基层填料
·2,447,543篇论文数据，部分数据来源于NoteExpress
Natural gravel is rich natural resources and also better stable compacting roadbed material in the river courses of mountain areas.
天然砂砾料是山区河道中丰富的自然资源，也是压实后稳定性良好的路基填筑材料。
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