roadbed area

基本解释

The second part is the scour mechanics about the pier of bridge and roadbed in the mountainous area.
第二部分山区桥梁墩台、沿河路基的冲刷机理；
In recent years the vacuum preloading method for treating soft foundation is often used in the construction of speedway roadbed of littoral and delta area.
真空堆载联合预压法处理软基近年来在沿海、三角洲地区的高速公路路基施工中经常出现。
The result indicates that the critical vehicle turnover wind speed increases with the rise of elevation and decreases with the appearance of roadbed disease of frozen area.
计算结果表明，青藏铁路临界翻车风速随海拔升高而增大，随冻土路基病害出现而降低。