知识就是通过这些方式在企业中扩展，产生一个螺旋式知识创造模型。

These are the means by which knowledge is "amplified throughout the organisation, creating a spiral model of knowledge creation".

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需求分析采用了螺旋式需求分析模型，将需求分析、需求描述和需求验证组织在系统迭代开发过程中。

The spiral requirement analysis mode is used for requirements analysis. The requirements analysis, requirements description and requirements verification is organized into RUP development process.

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文章通过对数据仓库技术以及传统瀑布式软件开发模型的分析，提出了数据仓库开发的螺旋式开发模型。

This paper presents a new spiral development model based on data warehouse through analyzing the data warehouse technique and traditional software development model of waterfall.

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