短語詞組短語runway approach threshold 跑道進場耑Runway threshold identification lights 頭識別燈runway threshold detail 跑道進口runway threshold light 跑道入口燈Runway threshold marking 跑道末耑標志height above runway threshold 通過跑道頭時離地高度displace runway Threshold 移位的著陸入口標志E displace runway Threshold 移位的著陸入口標志runway threshold speed 跑道頭上空速率 返回 runway threshold