Grey statistics method is more objective and reliable comparing with fuzzy hierarchy estimation, thus it is an ideal method for optimization of project schemes.
比较这两种方法，灰色统计评估法比模糊层次评价法更客观可靠，是一种比较理想的项目方案优化方法。
This paper gives grey statistics method and applies it into the optimization of ship types together with the fuzzy hierarchy estimation.
提出灰色统计评估法，并将其和模糊层次评价法一起用于船型优化实证中。
According to the statistics, a grey estimation model of GM (1, 1) was founded based on the grey system theory with satisfactory test conclusion.
根据灰色系统理论，利用统计资料，建立了天然气产量的GM(1,1)灰色预测模型。
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