为此，本文研制开发了房地产销售管理信息系统。

In this paper, we developed a real estate sales management information system.

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本文介绍了销售合同管理信息系统。

A sale contract management information system is presented in this paper.

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本文介绍了销售合同管理信息系统。

A sale contract management information system is presented in this paper.

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