Liu (1985). Each DMU can be viewed as an input-output system, designed and operated to的翻译：Liu (1985). Each DMU can be viewed as an input-output system, designed and operated to 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

刘（1985）。每个DMU可以看作是一个输入输出系统，设计和运作

Liu (1985). Each DMU can be viewed as an input-output system, designed and operated to

Liu (1985) .Each DMU can be viewed as an input-output system, designed and operated to

Liu (1985). Each DMU can be viewed as an input-output system, designed and operated to