金属铁路枕木 Railroad ties of metal ; Sleepers of metal ; Ties of metal ; metal railroad ties

铁质轨枕 iron sleeper

铁路金属枕木 railroad tie of metal ; Railway sleepers of metal

铁路轨枕 railroad sleeper ; railroad ties

铁路辙枕 railway chair

铁路枕木 Railway Sleepers

铁轨枕木 timber sleeper

铁路橡胶轨枕垫板 Railway rubber sleeper adapter plate

铁轨枕 iron sleeper

非金属铁路枕木 non-metallic railway sleepers