...lation Method）将观测数据的离散点转化为连续光滑曲线，以真实反映动态过程，再用数值微分法（Numerical Differential Method）直接求得瞬时生长速率(instantaneous growth rate，vinst)。
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numerical method for differential equations 数值方法 ; 微分方程数值解法
Numerical differential method and energy balance approach are applied respectively to recover the geopotential coefficients until 50 degree based on the simulated observation datum of CHAMP.
基于模拟的CHAMP卫星观测数据，分别用数值微分法和能量守恒法恢复50阶次的重力位系数。
Three methods for gravity field recovery are mainly studied from the views of observation equation, (1) numerical differential method, (2) energy balance approach, (3) numerical integration method.
从建立观测方程的角度来说，主要研究了三种恢复地球重力场的方法：(1)数值微分法，(2)能量守恒法，(3)数值积分法。
Based on the differential scheme, a numerical method of pricing compound options is presented.
提供一种基于有限差分格式的数值方法为复合期权定价。
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