一位丹麥思想家曾說過,我們的生活是向前的, 但是我們的認(rèn)識卻是向后的.We live forwards, a Danish thinker has said, but we understand backwards.這樣補(bǔ)償了當(dāng)激波產(chǎn)生時升力向后的運(yùn)動.This compensates backward movement of the lift forces as shock waves develop.運(yùn)動員以向前的姿勢起跳,向上、向...