测路基密实度和含水量
Density and Moisture of Roads
土基密实度
the density of the earth base
冻土铁路路基
railway embankments in cold regions
高速公路路基工程
freeway subgrade engineering
高速铁路路基
thigh-speed railway subgrade
fhigh-speed railway subgrade
High-speed Railway Subgrade
公路路基工程
Highway subgrade engineering