Duiqi excessive discretionary space to be reduced in order to prevent its abuse and the expansion method.
对其过大的裁量空间予以缩减，以防止其滥用和扩张法。
A simple reduced-order method for dynamic model is proposed on the basis of the aggregation method.
基于大系统理论中的集结法，提出了一种简便的动力学模型降阶处理方法。
A modal value analysis method is presented to obtain a reduced-order dynamic model with modal coordinates for structures with small damping or without damping.
针对小阻尼和无阻尼结构，提出了一种模态价值分析方法，用于在模态坐标下的动力学模型降阶问题。
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