railsn.铁路名词rail的复数形式.railn.栏杆；扶手；铁轨v.抱怨；责骂；以横木围栏；铺铁轨rail travel有轨运输rail return轨道回路rail tanker铁路油槽车rail impact纵梁碰撞rail lifter起轨器,抬轨器,升轨器rail sensor钢轨传感器rail bearer轨托纵梁rail bender弯轨器rail-liftn.升轨；起道rail cutting轨条切伤