The algorithm was applied to estimating the model parameters of coal yield prediction by using its global optimization performance, and a high precision model was founded.

利用遗传算法的全局寻优特点，将它应用于模型参数估计，建立了精度更高的煤炭产量预测模型。

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The sequence of the model factor effects (N>K>P) and the relation between high yield and fertilizer application, and the mutual functions among the yield factors of various fertilizers.

明确了模型因素效应顺序（氮肥＞钾肥＞磷肥）和高产与施肥的关系，以及各肥料产量因素间的交互作用效应。

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Using the theory of design on plate deformation, with attainment of high yield, we can find mathematics model and method on slab calculation.

利用中板变形规程的设计原理，以提高成材率为目标，得到了坯料计算的数学模型及基本方法。

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