fiexural formula
... 挠曲曲线：flexure curve 挠曲公式：fiexural formula 挠曲钢筋束：deflected tendon ...
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首次用无穷级数法求解了其临界屈曲时的挠曲线微分方程，并同时用能量法给出了其临界屈曲载荷计算公式。认为能量法求解这种情况下的屈曲载荷比较困难和复杂。
The deflection differential equation of string has been first solved by using infinite series method, and the formula of the buckling critical loads has been obtained with energy method.
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