assembly datum variation equation 装配基准变动方程组
equation of first variation [数] 一次变分方程 ; [数] 第一变分方程
equation of variation [数] 变分方程
variation-integration equation 变分积分方程
equation of variation type 变型方程
equation of energy variation 能量变化方程
The corresponding variation equation has also been derived to solve this problem.
为了获得该椭圆边值问题的解，推导出了有限元求解变分方程。
Second, the variation equation corresponding to the 2-D boundary value problem is derived.
然后导出与二维边值问题相应的变分方程；
The variation equation of the satellite orbit elements under both J2 and drag perturbations was derived based on the Gauss perturbation equation.
基于高斯摄动方程，推导了卫星在同时考虑J2和大气摄动情况下的轨道根数变化方程。
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