粗集料断级配
course aggregate gap gradation
CAGG
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
密断级配磨耗层
dense gap graded friction course
魏矛斯间断级配理论
Weymouth intermittent grading theory
间断半开级配
gap semi-open gradation (GSOG