順流逆流
幼苗
共回答了18个问题采纳率:83.3% 举报
There are many inventions are subject to some of the animal’ behavior and characteristics . For example we now indispensable traffic aircraft, it is according to the principle of the invention dragonfly flight. The plane's wing is based on the wings of the dragonfly, the plane back smooth curve is transforming the dragonfly, the purpose is to reduce the friction with air.
希望对你有所帮助
1年前
1