continuously graded aggregate

英 美
  • 连续级配骨料
  • aggregate adj.合计的;总的n.总计;进球总数;集料v.(使)聚集;总计
  • continuously adv.不断地;连续地
  • graded adj.等级的;按等级的;梯级的动词grade的过去式和过去分词.