movable rail

英 美
  • 活动护栏
  • movable adj.可动的;动产的;不定的n.家具;动产
  • rail n.栏杆;扶手;铁轨v.抱怨;责骂;以横木围栏;铺铁轨
    1. A movable rail, tapered at the end, such as that used in a railroad switch.
      转辙器一端尖细可移动的铁轨,如用于铁路岔道的