radio data service for train approaching announcement
radio data service for train number checking
radio data service for train routing forenotice
International Radio Service of Call Signs
data of train operation
data protection for power fail
Data protection of RAM with electricity
data service for highway-crossing warning
fusion of data of remote sensing
the records of data of histrical earthquake
length of service of episode
Coal pillar for protection of buildings
coal pillar for protection of builings
Design code for protection of structures against lightning
outer (inner) surface layer for protection of composite glassfibre air duct
planting grass for protection of slope
Plants for protection of slope
slag splashing for protection of converter