给出了积分滑模控制中切换函数的定义方法，以及非线性微分控制中微分系数的非线性函数表达式。
The switching function of integral sliding mode control is defined, and the nonlinear expression of derivative coefficient is presented.
为此我们导出了拟合函数表达式，提出用非线性参数统计模拟地震记录的方法反演q值。
Hence we derive the expression of fitting function and propose a new Q-value inversion method using non - linear parameter statistical modeling of seismic records.
为此我们导出了拟合函数表达式，提出用非线性参数统计模拟地震记录的方法反演q值。
Hence we derive the expression of fitting function and propose a new Q-value inversion method using non - linear parameter statistical modeling of seismic records.
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