Việt
mặt trên ray
đầu ray
mặt đỉnh ray
Anh
top of rail
check
head
rail gauge
top of the rail
rail table
upper surface of the rail
top of rail /xây dựng/
check, head, rail gauge, top of rail
top of the rail /giao thông & vận tải/
rail table, top of the rail, upper surface of the rail