除外闸 Except Gate

外闸带 external contracting brake band

外闸门 flood tide gate

雨篷及户外闸 Awnings and exterior shutters

外闸瓦制动器 external block brake

额外闸 extra gate

外掩铁闸 outward swinging metal gate

外抱闸 external contracting brake

外部闸道协定 Exterior Gateway Protocol

室外通风风闸 outdoor ventilation damper