开级配磨耗层
Open graded friction courses
Open grade friction course
密断级配抗滑层
dense gap-graded friction course DGGFC
密断级配沥青混合料设计
dense-gap graded asphalt mixture design
密级配沥青混凝土
dense graded asphalt concrete
dense grad asphalt concrete
薄层断层解剖
thin-layer sectional anatomy
粗集料断级配
course aggregate gap gradation
CAGG