Base course [highways] : the part of a road structure Below the wearing course and above the road Base.

基层[公路]：路面层之下路基之上的道路结构部分。

youdao

Under not obvious increasing the project investment circumstances, volume method for bituminous mixture is obvious to increase the mechanics performance and the surface function as a wearing course.

按体积比设计沥青混合料的方法可以在不明显提高造价的前提下，较传统技术显著提高沥青路面的力学性能和表面功能。

youdao

Under not obvious increasing the project investment circumstances, volume method for bituminous mixture is obvious to increase the mechanics performance and the surface function as a wearing course.

按体积比设计沥青混合料的方法可以在不明显提高造价的前提下，较传统技术显著提高沥青路面的力学性能和表面功能。

youdao