3.2.4 The character of gradually varied flow in cross section
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3.2.4 The character of gradually varied flow in cross section图片（共3张） :

        Two important properties of gradually varied flow in cross section:(1) Flow cross-section of gradually varied flow is approximately flat. Direction ofvelocity approximately parallel to each point in cross section.(2) The hydrodynamic pressure of gradually......（本文共 908 字, 3 张图）     [阅读本文] >>