State estimation models are developed with PMU of different precision.
并针对不同的相角量测精度，采用不同的状态估计模型。
Finally, the best estimation models are determined through model verification.
进而对模型进行优选和检验，确定最佳估测模型。
The subjectivity and redundancy of inputs are key obstacles to the application of software cost estimation models.
输入的主观性以及输入过多是妨碍软件成本估算模型实际应用效果的重要影响因素。
According to the components pattern importance in subsystems, reliability estimation models of subsystems, parallel systems and the total system are constructed.
根据子系统中各部件的模式重要度，建立子系统可靠性估计模型，进而获取并联系统和总系统的可靠性估计模型。
Then, the stepwise regression analysis method is used to select the sensitive wavelengths and spectral parameters and establish kalium content estimation models.
然后，采用逐 步回归分析方法，筛选敏感波长与光谱参数，建立钾素含量估测模型；
The dissertation first synthesizes state-of-the-art from the perspectives of main factors associated with the OD estimation, which include OD estimation models and its related problems.
首先，根据OD估计所涉及的主要因素，从OD估计模型和OD估计相关问题两个方面对国内外现有的研究进行了全面综述。
The dissertation first synthesizes state-of-the-art from the perspectives of main factors associated with the OD estimation, which include OD estimation models and its related problems.
首先，根据OD估计所涉及的主要因素，从OD估计模型和OD估计相关问题两个方面对国内外现有的研究进行了全面综述。
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