刚度退化模型
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stiffness reduction models
刚度折减模型
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Models based on uniform reduction of stiffness and smeared crack concept are both employed to compare the (efficiency) and (relative) advantages of each model.
对以刚度均减和裂缝概念为基础建立的两种模型进行效果和优劣比较。
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