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采用灰色系统修正模型对广州市１９９３—２０００年的非农业人口数、社会总产值及房屋竣工面积三项指标进行预测，取得满意效果。
The gray system revision model was used to predict the three indicators of nonagricultural population, social total output value and housing completed area in Guangzhou from 1993 to 2000, and achieved satisfactory results.