In this paper, the hardness of the shallow groundwater was treated as a grey variable and the GM (1, 1) grey model was created to predict the future trend of the change in hardness.
本文将市区的浅层地下水硬度作为灰色量，用已有的硬度数据建立GM(1,1)灰色模型，预测其未来的变化趋势。
We used Array Grey Prediction method found a new model to predict pipeline's corrosion trend and introduce three typical data processing mode.
利用“数列灰预测”建立了管道腐蚀预测的新模型，介绍了三种常用的数据处理方式。
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