At all leels, mean dural sac cross-sectional area in the supine position was significantly smaller than in other postures. 在不同脊椎高度，硬脊膜囊的平均橫截面積在仰卧位是顯著小於其他體位時。
The contactless electrostatic resonance method to determine the cross sectional area of conductive and unconductive monofilament was introduced. 介紹了一種可測試所有導電和非導電纖維橫截面積的非接觸式靜電共振法。
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。
