In the case of Web polls, I am using a non-parametric analysis procedure because Web polls often use a nominal scale to record voter preference.

对于Web民意测验的示例，我使用了非参数分析过程，因为Web民意测验通常使用定类尺度来记录投票者的偏好。

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Secondly, model output tracking robust control is proposed under the large-scale mode aggregation and the condition that the controlled nominal system is similar to the reference model.

然后从大系统模型集结为背景提出模型输出跟随控制问题，研究了被控系统的标称系统与理想模型相似时的模型输出跟随控制系统的鲁棒控制问题。

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Secondly, model output tracking robust control is proposed under the large-scale mode aggregation and the condition that the controlled nominal system is similar to the reference model.

然后从大系统模型集结为背景提出模型输出跟随控制问题，研究了被控系统的标称系统与理想模型相似时的模型输出跟随控制系统的鲁棒控制问题。

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