结果表明：当环境流中弱二次切变强度增加（减少）时，扰动动能的最大值增加（减小），扰动动能的变化加速（减速）；
The result indicates:when the weakly secondary shear grows(decays), the maximum value of the perturbation kinetic energy also grows(decays), and the change of the energy accelerates(slows).
通过计算套管中注流的能量分散强度，得出了套管中弥散微小气泡的最大尺寸，并采用伯努利方程分析了套管中注流的压力分布。
The maximum size of the bubbles was obtained through calculating the energy dissipation rate of liquid flow in the shroud.
随旋流强度沿程的衰减最大值点不断向管中心移动；
With the swirl decays along the tunnel the highest point moving to the pipe center;
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