BERMAN updating arithmetic makes use of experimental model matrix and eigenvalue to modify the finite element academic model, based on the model orthographical condition of non-damping system.
BERMAN修正方法基于无阻尼系统的模态正交条件，利用实验模态矩阵和特征值对有限元理论模型进行修正。
Orthographical experimentation was used to search the optimum formula and the best processing condition.
采用正交实验的方法寻求最佳配方和工艺条件。
Orthographical experimentation was used to search the optimum formula and the best processing condition.
采用正交实验的方法寻求最佳配方和工艺条件。
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