路基土方作业
the construction of the earthwork and stonework for subgrade
U-型块石路基
U-type crushed rock embankment
滨海软土路基
Roadbed by offshore soft clay
冻土路基
subgrade in permafrost soil zone
frozen soil subgrade
frozen soil embankment
permafrost subgrade
Frozen soil roadbed
frozen earth roadbed
permafrost embankment
roadbed in permafrost regions
Frozen subgrade
frozen-earth roadbed
冻土路基温度场
Temperature field of frozen soil roadbed
冻土铁路路基
railway embankments in cold regions