研究了生产可能性集合的公理性假设对生产可能性集合包含关系的影响，证明了满足不同公理性假设的生产可能性集合之间存在着包含关系。
The paper discusses the inclusion relations between production possibility sets (PPS) in DEA models and axiomatic assumptions on PPS, proves that there exist inclusion relations between several PPS.
阿格尼丝·赫勒把日常生活定义为：“那些使社会再生产成为可能的个体再生产要素的集合。”
Agnes Heller to daily life is defined as: "Those who make social reproduction the reproduction possible elements of a collection of individuals."
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