对阶数 meaning in English

match exponents

In this paper , that using experimental mode data to modify calculating model is taken as the research object
摘要以实验模态数据修正降阶模型为研究对象，由于所测量的特征对阶数通常小于模型阶数，造成了特征方程为超越方程。
Based on the multi - scale representation theory , we present a reduced order model for the solving of the inverse problem . also the relative error covariance matrix is used to analyze the performance of models with different orders ; 4
基于小波多尺度表示理论给出逆问题求解的多尺度降阶模型，同时用相对误差协方差矩阵对阶数不同的降阶模型的估计精度进行分析； 4