ฮานอยวันที่24/05/2562,สุดยอดเลขเด่น-เลขวิ่ง
Over the past 100 years aircraft engineers have designed and re-designed aircraft to do a multitude of tasks. Designing aircraft is often a matter of compromise and much of the design is about what task the aircraft is to fulfill.
from: http://ezinearticles.com/?Combination-Control-Surfaces-on-Aircraft-Airfoils&id=128147
