... 条件稳定性 conditional stability 条件相对极值 conditional relative extremum 条件协方差矩阵 conditional covariance matrix ...
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理想形变假设认为变形是在整体塑性功取得相对极值的条件下得到的，给出了理想形变的数学公式和有限元表达。
The mathematics formula and FE expression of ideal forming obtained when the global plastic work has its relative extreme value is provided.
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