궤도재료(軌道材料) track material
궤도저항기(軌道抵抗器) track resistor
궤도저항자(軌道抵抗者) track resistor
궤도절연(軌道絶緣, track insulation)
궤도정규(軌道定規, standard repulation of track)
궤도정비기준(軌道整備基準, instruction for track maintenance)
궤도정정(軌道整正) straightening of the track
궤도조명반(軌道照明盤) track circuit panel, illuminated diagram
궤도조상기(軌道弔上機)
궤도중심(軌道中心) track center