利用在连续两个结点上的三柱端弯矩方程，消去侧移分量产生刚架连续三跨的柱端弯矩与荷载关系的三跨弯矩方程。
For two Three-Columniation End moment Equations at neighbor points, moved out sidesway, it is Three-span moment Equation of frame that be relationship moments in three spans with load.
利用在连续两个结点上的三柱端弯矩方程，消去侧移分量产生刚架连续三跨的柱端弯矩与荷载关系的三跨弯矩方程。
For two Three-Columniation End moment Equations at neighbor points, moved out sidesway, it is Three-span moment Equation of frame that be relationship moments in three spans with load.
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