The combined use of fuzzy mathematics, neural net method and gray system theory in the selection of mining method for Jinshan gold mine was a new trial.
将模糊数学、神经网络方法及灰色系统理论有机地结合起来，应用于金山金矿采矿方法选择中是一次新的尝试。
The mathematics model is applied to analyze bidding scheme through calculating finance net present value in this paper.
本文运用数学模型，分析计算出财务净现值最大时的投标方案。
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