灰色预测模型,简单实用，可用于经济预测及其他预测问题，预测精度高-Gray prediction model , simple and practical, can be used for economic forecasts and other prediction problem, prediction accuracy
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SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002557s ]
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SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.003201s ]
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