例句與造句

1. The characteristic of " lock - in " can be used to explain all kinds of nonlinear phenomenon of the stall flutter
   這種頻率鎖定規(guī)律可以清楚地解釋失速顫振的各種非線性現(xiàn)象。
2. Firstly , the airfoil ' s classic flutter ( at small attack angle ) , stall flutter ( near the static stall angle ) and response ( at large attack angle ) are analyzed . it is found from the numerical results that " lock - in " will occur at certain freestream velocity range near the static stall angle , where the frequency of the vortex will be equal to the natural frequency and the flutter has the characteristic of self - induced oscillation . when the attack angle is far from the static stall angle , the vortex will have its own frequency , which differs from the natural frequency , and the flutter has the characteristic of forced oscillation
   首先研究了二維翼型的古典顫振(小攻角) 、失速顫振(失速攻角)和動力響應(yīng)問題(大攻角) ，得到以下結(jié)論：在靜態(tài)失速攻角附近的一定來流速度范圍內(nèi)，分離渦會發(fā)生頻率鎖定現(xiàn)象，分離流的頻率與固有頻率趨于相同，這時的振動呈現(xiàn)自激振動的特點；遠(yuǎn)離失速攻角時分離流頻率則擺脫固有頻率的影響，此時的振動具有強迫振動的特點。
3. It's difficult to find stalling flutter in a sentence. 用stalling flutter造句挺難的