This paper establish the mathematics model of parameter spline function to optimize the data acquired by CMM.
本文建立了参数样条模型，并通过运行相应的程序，获得了利于光顺曲面构造的优化数据。
In this paper, through the model of parameter adjustment with constraints among the parameters, a further proof on the equivalence of the formulas of variance-covariance components is gives.
通过附有条件的间接平差模型进一步证明各类方差-协方差分量估计公式之间的等价性。
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