在特征集的基础上，讨论了其参数导数的构成情况，用有限个点和函数表示了无穷个参数导数的情形。
Based on characteristic set, the case of infinity parameters is described by using of finite value and functions.
在很多物理和力学的问题中常出现最高阶导数项带有小参数的微分方程。
In many problems of mechanics and physics there frequently appears the differential equation with the derivative term of the highest-order containing small parameters.
主要讨论了测量参数间的时间延迟对飞机气动导数辨识结果的影响。
This paper briefly discusses the effects on the aerodynamic derivative identification results caused by time delay in measured parameters.
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