一九一一年五月,發(fā)現(xiàn)“蜉蝣號(hào)”飛艇的升力不足.In May 1911 the Mayfly was found to lack sufficient lift to get airborne.橋面橫斷面可能由于過(guò)量的升力而發(fā)生扭轉(zhuǎn).The cross section of a bridge deck may twist as a result of excessive life.這一誘導(dǎo)氣流產(chǎn)生正的力矩,該力矩隨升力或迎角a的增加而增加...