利用开口圆柱壳的一般力学原理和方法，推导出壳体的内力、位移和应力求解格式。
The formulas of internal force, displacement stress was deduced according to the general mechanics theory of the ringent cylindrical shell.
由此，当一纸张穿过基 板的开口，切割装置可沿基板位移并切割纸张。
Thus, when one piece of paper goes through the opening of the basal plate, the cutting device can move along the basal plate and simultaneously cut the paper.
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