Subgrade is the important part of the highway engineering and the base of the pavement.
路基是公路工程的重要组成部分，是路面的基础。
The cliff debris subgrade is a special type of subgrade in mountainous highway construction.
岩堆路基是山区公路建设中遇到的特殊路基形式。
Subgrade is the important part of the highway engineering and the base of the pavement.
公路工程的重要组成部分，是路面的基础。
Subgrade is the important part of the highway engineering and the base of the pavement.
公路工程的重要组成部分，是路面的基础。
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