定义了区间数据包络分析(DEA)模型。
An interval data envelopment analysis (DEA) model was first defined.
此模型反映了刀具曲面、刀具包络面以及设计曲面三者之间的关系。
So the relationship among tool surface, tool envelope surface and designed surface are expressed explicitly.
在此基础上建立了数据包络分析测算模型的投入指标体系；
On this basis, we establish the input indexes system for the DEA model.
在此基础上建立了数据包络分析测算模型的投入指标体系；
On this basis, we establish the input indexes system for the DEA model.
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