Production possibility set in DEA has two equivalent forms: sum form and intersection form.
DEA的生产可能集有两种等价形式—和形式及交形式。
It is set theory of mathematics to describe the possibility is particularly important.
正是集合理论形式刻画的可能性对数学显得特别重要。
You have a possibility to set a password and change it any time for security reason.
您有一种可能性设置密码和任何时侯改变它为安全原因。
You have a possibility to set a password and change it any time for security reason.
您有一种可能性设置密码和任何时侯改变它为安全原因。
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