In case of the turbine is operated departing the optimum condition, the low presure and the vortex band will be established in the draft tube centre by the flow circulation.
水轮机在偏离最优工况运行时，水流的环量会使尾水管中心产生低压并形成涡带。
Tower has two giant holes, the sea at an alarming speed from the two giant holes flow, which rolled up strong spray, a huge vortex, so that this band wave surging waters, the sea fog with activity.
塔上有两个巨洞，海水以惊人的高速从这两个巨洞中流过，从而卷起狂澜，形成巨大旋涡，使这一带水域的浪潮汹涌澎湃，海面雾气腾腾。
The relationship between maximum local damage variable at the center of the band and flow tensile stress becomes flat as softening modulus increases or the elastic modulus decreases.
增加降模量或降低弹性模量，局部损伤变量最大值-流动应力的关系趋于平直。
Local damage variable increases as flow tensile stress acting on the band decreases.
随着流动拉应力降低，局部损伤变量增加。
Local damage variable increases as flow tensile stress acting on the band decreases.
随着流动拉应力降低，局部损伤变量增加。
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