relative geometry

The concept and the definition of the reference orbital elements are introduced using spherical geometry. In terms of the reference orbital elements, governing equations for relative motion are formulated.

利用球面几何方法，引入参照轨道要素概念，给出其定义，并推导了用其描述的从星相对运动方程的精确形式。

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For any information source on a countable set, the limit properties of relative likelihood ratio and log-likelihood ratio of entropy density with respect to the independent geometry distribution, an important problem in the information theory is discussed.

对任意的可列集上的信息源，探讨信息论的-个重要问题，即探讨了相对于独立型几何分布的熵密度似然比与对数似然比的极限性质。

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Aiming at the solving problem of equilibrium solution of this nonlinear model, geometry theory of differential equations is adopted, and the relative calculation formula is given.

采用微分方程几何理论分析河流综合水质模型的基本方程，探讨了河流综合水质模型的平衡状态解的求解方法，并给出相关计算公式。

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