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在灰数白化值确认度意义下，本文给出区间灰数的一种序关系。
Based on the kenning degree of whiting value of grey number, this paper gives a kind of order relations of interval grey number.
定义了一种反映决策者满意度的区间数序关系，基于此将区间DEA中的区间不等式约束转化为确定型约束。
This order relation expresses the decision-makers satisfaction degree based on which the inequality constraints of interval DEA can be transformed into constraints with exact coefficients.
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