macadam的例句（macadam在句子中的用法）

• surface with macadam 表面用碎石覆盖
• asphalt macadam 沥青碎石
• The construction techniques of cement treated macadam base are always paid more attention by highway constructors. 水泥稳定碎石基层的施工技术历来被公路施工单位所重视.
• Macadam type bases involving successive layers of crushed rock bound with rock dust were also used. 人们曾经使用“石结”基层——几层由石粉黏结在一起连续的碎石层.