The drains design of the expressway has marked influence on the stability of roadbed and service life of road.
高速公路的排水设计对路基的稳定性和路面的使用寿命具有显著影响。
The roadbed design of basic content is determining roadbed side slope form and slope .
路基设计的基本内容，就是确定路基边坡的形状和坡度。
There are not comprehensive specifications and criterions for the construction of desert roadbed in respect of design? experimention and test in our country even in the world.
我国乃至世界在沙漠公路的设计、施工、试验、检测等方面没有较为全面的规程和规范，以指导沙漠路基的施工。
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