gravel stone asphalt mixture 砾石沥青混合料
All roads near the Odessa highway are more or less fine. But 50 kilometers further they become really terrible, some kind of mixture of asphalt and gravel.
所有临近敖德萨的高速公路都还说得过去。但是50公里开外，路就变得非常难走，路面大概是沥青和碎石的混合物。
The design of the mixture ratio of the cement stabilized sand and gravel is one of the critical links to ensure the whole quality of the asphalt pavement on semirigid base course.
水泥稳定砂砾混合料的配合比是保证半刚性基层沥青路面整体质量的关键环节。
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