The mathematical model of sucrose content is given with residual GM (1, 1) model of the grey systematic theory in this paper. The result is precision.
利用灰色理论的GM(1,1)残差模型，建立了甜菜糖厂生产期蔗糖分的预测模型，精度较高，获得满意效果。
Based on the grey correlation analytical method in the grey systematic theory, this paper has put forward a kind of new method of calculating propagation time of flow.
基于灰色系统理论中的灰色关联分析方法，提出了一种新的流量传播时间的推算方法。
When grey systematic theory at present set up GM (1 , 1 ), it assumes that fit curve passes the first point of modeling data to confirm the integral constant, thus obtained to forecast formula.
目前灰色系统理论在建立GM（1，1）模型时通常采用假定拟合曲线通过建模数据第一点来确定积分常数，从而得到预测公式的方法。
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