The calculated result from an example shows that the stable sectional area reduces with the increase of working head, or the decrease of the tailrace tunnel length. 計算結果表明，尾水調壓室斷面面積隨水輪機工作水頭的增大或尾水洞長度的縮短而減小。
The resistance is halved if the cross-sectional area is doubled. 如果截面積增加一倍，則電阻減少一半。
In the tree crown, the basal area growth of trunk sapwood is approximately equivalent to that of the upper branch sapwood. 在樹冠內，樹榦邊材斷面積生長量與其上部的枝條邊材斷面積生長量大致相等。
Time dependent calculation for a suddenly imposed pressure gradient has shown that variation of the cross sectional area reduces inertial effect in the contraction flow region. 壓力差為階躍變化的情況下數值計算結果說明了收縮部的斷面積的時間變化減少了收縮部的慣性效果。
