landing flap

基本解释

Many landing gear, flap track, flap carriage, and other flap actuating components on Boeing airplanes are made of high-strength alloy steels, such as 300M, Hy-Tuf, 4340M, and 4330M.
波音飞机的起落架、襟翼滑轨、襟翼滑架和其它襟翼作动部件大多采用了高强度合金钢材料，诸如300M、Hy-Tuf、4340M和4330M。
Wing flap, widely assembled in various kinds of airplanes, can increase lift force rapidly in a short time, for an aircraft taking off or landing, and also at some emergency situations.
襟翼在各种飞机上普遍应用，它可以在短时间内增加飞机升力，主要用在飞机起降过程和特殊紧急情况下。