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two pivot points
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  两支点
     Under the condition of variable rigidity, the deflection of the casing is inversely proportional to the variable rigidity coefficent β, and to the inertia moment I only under the condition of the space between two pivot points being constant.
     在变刚度条件下,套管挠度与变刚度系数β成反比,在两支点间距为常数情况下,仅与惯性知I成反比。
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  相似匹配句对
     Two.
     二.
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     Two.
     二、末日意识
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     Pivot for Translation
     文化——翻译的轴心
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     The Design of the Two—Stage Pivot Feeder System of the Mounted Combine
     两段绞接式联合收割机输送槽的设计研究
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     Asarum,regular Chinese traditional medicine , one of two pivot Chinese traditional medicine.
     细辛(Asarum),是常用中药,国家两个重点中药材之一。
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  two pivot points
With two pivot points on a binding, at least one of them would be effective in every situation.
      
This mirror has two pivot points that allow the driver to adjust the mirror for optimum visibility.
      
Sign c is -1 for the closer of the two pivot points to the camera and 1 for the other.
      
It works by first selecting two pivot points which are furthest apart.
      
If the two pivot points are well-selected at every level, the gh-tree tends to be a well-balanced structure.
      
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By using the principle and method of elastic deformation, an investigation in the bending deflection of the variable rigidity combined casing string is conducted. By adopting the expression of trigonometric series, the bending deflection equation and calculation method are worked out. Under the condition of variable rigidity, the deflection of the casing is inversely proportional to the variable rigidity coefficent β, and to the inertia moment I only under the condition of the space between two pivot points...

By using the principle and method of elastic deformation, an investigation in the bending deflection of the variable rigidity combined casing string is conducted. By adopting the expression of trigonometric series, the bending deflection equation and calculation method are worked out. Under the condition of variable rigidity, the deflection of the casing is inversely proportional to the variable rigidity coefficent β, and to the inertia moment I only under the condition of the space between two pivot points being constant. An example of calculation shows that the error of deflection caused by variable rigidity cannot be neglected, and the relative or is 35% ~ 45% compared with that calculated by using the traditional method. By using the series equation and energy method presented in this article, the bending deflection of the variable rigidity combined casing string can be calculated rapidly, and this is of great importance to determine the location of the casing centrilizers.

利用弹性变形原理和研究方法,对不同钢级、壁厚的变刚度组合套管柱的弯曲变形计算进行了研究。采用三角级数的表达式,导出了挠曲变形方程及计算方法。在变刚度条件下,套管挠度与变刚度系数β成反比,在两支点间距为常数情况下,仅与惯性知I成反比。实例计算表明,在变刚度组合套管柱中,变刚度引起的挠度计算误差不能忽略,与传统的不变刚度计算方法相比,相对误差在35%~45%之间。应用本文的级数方程和能量方法,可迅速计算变刚度组合套管柱的挠曲变形量,这对合理确定套管扶正器安放位置、提高套管柱居中度都很重要。

 
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