We found that the gravity model improved the modeling method for the future mortality of our country, and provided a more accurate forecast for the future mortality rate of China's population.

研究发现，引力模型改进了我国人口未来死亡率建模的方法，提供了更准确的预测。

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And we forecast the vehicle population from 2007 to 2017 by use of multi-linear regression model.

并应用多元线性回归模型预测了2007年到2017年的汽车保有量。

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Through that model, we get the model of forecasting of vehicle population and forecast the number of vehicles from 2007 to 2017.

通过对我国未来2007年到2017年汽车市场供给规模的预测，并将之与汽车市场需求规模对比，找出之间存在的差异。

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When a trap counts more than 10 flies in 30 minutes, or when the forecast model predicts a rapid surge in the fly population, it triggers an alert and sends a text message with the warning to farmers' mobile phones.

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