短语词组短语bitumen macadam 沥青碎石路macadam aggregate 锁结式集料;粗粒掺和料;碎石Lowell Macadam 麦克亚当pitch macadam 柏油处理路面black macadam 碎石黑grouted macadam [公路]灌浆碎石路;灌沥青碎石路grading macadam 级配碎石macadam subbase 碎石基层stable macadam 稳定碎石 返回 macadam