飞机刚诞生的时候,一些人称呼它为铁鸟,钢铁的身体,却像鸟一样能够飞翔。不过,这个铁鸟的飞翔还是与真实的鸟的飞翔有所不同,至少,飞机不能像鸟一样扇动翅膀。现在不能,不代表未来不能。如果在飞机制造上使用某种特殊材料,让飞机扇动翅膀也并非不可能。这种神奇的材料就是金属 Just as the aircraft was born, some called it an iron bird, the body of steel, but it was able to fly like a bird. However, the flying of this iron bird is still different from the flying of a real bird, at least, the airplane can not flap its wings like a bird. Not now, does not mean that the future can not. If the aircraft used in the manufacture of a special material, so that the aircraft flapping wings is not impossible. This magical material is metal