gap-graded design英语标准发音:gap-graded design英式发音:美式发音:翻译中文间隙分级设计gap-graded design - 基本释义[词典1]间断极配设计gap-graded design - WEB词典dense-gap graded asphalt mixture design密断级配沥青混合料设计 参考资料: 1.百度翻译:gap-graded design2.有道词典:gap-graded design3.爱词霸:gap-graded design