目 录 关键词： 道路等级；平曲线；竖曲线；排水；路基；沥青路面 [gap=837]Keywords： road grade, horizontal curve, vertical curve, drainage, sub-grade, asphalt
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Tunnel engineering becomes more and more used to pass through the mountains and enhance the road grade.
隧道工程越来越多地用于穿越山岭,提高道路等级。
参考来源 - 富水地层中的破碎带对隧道围岩稳定性影响数值分析And that will reduce the transport cost of the logistics of our country. This paper qualitative analysis the road grade’s influence on transporting cost, and analysis the Urban Road System overall arrangement’s influence on transport cost.
这也将促进我国物流运输成本的降低,论文正是在分析道路等级和城市道路网络布局的基础上,定量研究道路等级对运输成本的影响和定性分析城市路网布局对运输成本的影响。
参考来源 - 基于道路网络影响的物流运输成本研究·2,447,543篇论文数据，部分数据来源于NoteExpress
随着道路等级的提高，桥梁设计中竖向挠度的控制显得尤为重要。
With the promotion of road grading, the control of vertical deflection in bridge design is becoming more important.
旧路拓宽加铺改造对提高道路等级和改善路网结构具有较高的技术经济价值。
It has higher value of technique and economic that the old road has been widened, to improve the current road grade, and reform the road net construction.
旧路加宽改造对提高既有道路等级和改善路网结构具有较高的技术经济价值。
The widening transformation of the old road has a high technical and economic value to improve the existing road level and improve the road network structure.
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