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。
The biggest disadvantage of the system lies in the small amount reflection of information. When it is simulated display in real scene, it isn't able to provide the true datum.
这种体系最大的缺点在于反映信息量小，在对真实场景进行模拟显示的时候，无法提供真实的场景数据。
A direct calculation method of the critical shear stresses was established according to experiment datum on simulated rainfall.
提出了采用人工模拟降雨试验数据直接计算临界抗剪切应力的方法。
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