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根据离散优化的特点，提出了改进的动态圆整法、拉格朗日松弛法，并将这两种方法应用于离散变量结构优化设计中。计算结果表明，改进后的方法优化结果好，适应面广。
According to the characteristics of discrete optimization, an improved dynamic rounding method and Lagrangian relaxation method are proposed, and these two methods are applied to the structural optimization of discrete variables. The calculation results show that the improved method has good results and wide adaptability.