它们一般出现在河流的拐弯处，湍急的水流在此会产生一种称为「旋转剪切(rotational shear)的力，使一大块冰与周围冰层分离，绕其旋转。冰盘旋转时，不断压迫周围的冰，慢慢形成一个完美的圆。
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提出一种测量物体固有频率的新方法———旋转剪切频闪散斑干涉法。
A new experimental method for measuring resonant frequencies of objects is proposed by use of rotating shearing stroboscopic speckle interferometry.
本文讨论了横向旋转剪切干涉中各参量的数理关系并指出可能的重要应用。
In this paper, mathematical relationship among parameters of lateral-rotation shearing interference and possible important applications of this type of interference are discussed.
由同步电动机带动外圆筒旋转剪切流体，从而将粘性力传递给内筒，内筒与圆轴相连。
Synchronous motor drives the outer cylinder to rotate to shear the fluid, and the cylinder passes the viscous force to the inner cylinder that connects to a circular shaft.
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