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，硬脊膜囊的平均横截面积在仰卧位是显著小于其他体位时。
The contactless electrostatic resonance method to determine the cross sectional area of conductive and unconductive monofilament was introduced. 介绍了一种可测试所有导电和非导电纤维横截面积的非接触式静电共振法。
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. 计算结果表明，尾水调压室断面面积随水轮机工作水头的增大或尾水洞长度的缩短而减小。
