order characteristics meaning in Chinese

委托单的特性

A global equation is finally obtained as a second - order characteristic matrix equation
该列式只需对扇形区域在角度方向上离散，最后得到一个二次特征根矩阵的总体方程。
A lowest order characteristics - mixed finite element method for convection - dominated diffusion problems with small parameter
小参数对流占优扩散问题的最低次特征混合有限元方法
Aimed at predictive functional control , this paper uses a second order characteristic model for predictive model that is easily achieved by projection method
该文针对预测函数控制算法的缺陷，提出利用二阶特征模型来构成预测模型。