每个热交换管道具有多个从其入口端纵向平行地延伸到其出口端的流动通道。
Each heat exchange tube has a plurality of flow channels extending longitudinally in parallel relationship from its inlet end to its outlet end.
首次证实了纵向旋涡和径向旋涡的存在，验证了前人旋涡理论假说的正确性，揭示旋涡鼓风机的流动特点。
We confirm firstly the existence of lengthways and radial eddy, verify the accuracy of the former eddy theories hypothesis, and disclose the flow characteristics of the vortex blower.
本文基于理想不可压轴对称位流理论，导得纵向加速流绕椭球流动的精确解；
Based on the axisymmetrical potential flow theory of an invicid incompressible fluid, the exact solution of an longitudinally accelerated flow passing an ellipsoid was obtained.
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