WZ series eddy - current brake.

WZ系列涡流制动器.

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WZ: Well, we are applying for PhD in your Economics Department.

我们在申请贵系的博士学位项目, 我可以问几个问题吗?

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Shao WZ . Object Oriented System Analysis. Beijing: Tsinghua University Press, 1998 ( in Chinese ) .

邵维忠. 面向对象的系统分析. 北京: 清华大学出版社, 1998.

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