冻土铁路路基
railway embankments in cold regions
高速铁路路基
thigh-speed railway subgrade
fhigh-speed railway subgrade
High-speed Railway Subgrade
公路铁路两用桥
road rail bridge
rail-cum-road bridge
highway and railway bi-purpose bridge
公路－铁路两用桥
bi-purposed bridge for highway and railway
铁路路堤填料
filling material for railway embankment
铁路路基
railway foundation
Railway sub-grade
railway subgrade
railroad subgrade
permafrost
railway roadbed
Railway bed
railway subgrade compaction
railroad bed
subgrade
railway formation
Railway embankment
铁路路基检测
Inspection of Railway Subgrade
铁路路况识别系统
automatic railway condition recognition system