关键词：公路网；自然灾害；交通管理；应急响应 [gap=11321]Key words：highway networks；natural disaster；traffic management；emergency response
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density of highway network 公路网密度
arterial hub of highway network 公路主枢纽
Digital highway network 数字公路网
Highway Network Data and Information 干线网络数据和信息
For implementation of the western China development strategy,promoting its economic construction,decreasing the gap between the west and other parts,the government increases the investment in the highway construction and improve the highway network,which combine the middle portion and the west.
为了实现西部大开发的宏伟战略,促进西部经济建设,缩小中西部之间的差距,国家加大了对连接中西部的高速公路的建设力度,不断完善中西部之间的高速路网。
参考来源 - 山区隧道围岩分类与洞口边坡稳定性研究The highway construction and development problem in under-development district is the foundation problem of the development of the district in the Midwest part of China, but scale and the layout of highway network are the most important.
我国西部欠发达地区的公路建设发展问题，是中国区域发展的基础性问题，而公路网的规模和布局又是重中之重。
参考来源 - 欠发达地区公路建设发展问题研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Moreover, the highway network ensures convenient ways of getting to Leshan and reaching each of the scenic spots within Leshan and its environs.
快捷的公路系统不仅可以很方便地到乐山，还可以很方便地到达乐山周边的任何一个风景区。
The determination of the rational highway grade structure is one part of highway network planning, it also is an important content of highway network layout optimization.
公路网合理等级结构的确定，是公路网规划的组成内容之一，也是公路网布局优化的重要组成内容之一。
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