...3-2 描述流体运动的一些基本概念 3-2 描述流体运动的一些基本概念 3-2-1 流管·流束·过流断面·元流·总流： 流管（Stream Tube）：在流场中，任意取一非流线且不自相交的封闭曲线，从这封 闭曲线上各个点绘出流线，组成封闭管状曲面。
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stream tube model 流管模型
transonic stream tube 跨音速流管
bend stream-tube 弯曲流管
stream tube area 流管面积
Down-stream tube 下降管
Stream-tube Model 流管模型
Firstly, formula of stream tube method was summarized including single disk multi-tube model and double disk multi-tube model.
首先，对流管法计算公式进行归纳总结，包括单盘面-多流管模型和双盘面-多流管模型。
Relative permeability curve method and stream-tube method are commonly used to plot theoretical curves of water-cut vs.
制作含水率与采出程度关系理论曲线常采用相渗曲线法和流管法两种方法。
Relative permeability curve method and stream-tube method are commonly used to plot theoretical curves of water-cut vs. recovery percent of reserves.
制作含水率与采出程度关系理论曲线常采用相渗曲线法和流管法两种方法。
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