macadam
n. 鋪路用的碎石料; 柏油碎石路
1. broken stone used in macadamized roadways
2. a paved surface having compressed layers of broken rocks held together with tar
Macadam type bases involving successive layers of crushed rock bound with rock dust were also used.
人們曾經使用“石結”基層——幾層由石粉黏結在一起連續的碎石層.
The construction techniques of cement treated macadam base are always paid more attention by highway constructors.
水泥穩定碎石基層的施工技術歷來被公路施工單位所重視.