RUP分为四个阶段，每一个阶段的重点放在开发周期内一个特定的方面：起始，精化，构建和产品化。

The RUP is divided into four phases, each one focusing on a certain aspect of the development cycle: Inception, Elaboration, Construction, and Transition.

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在一个RUP项目里，生命周期由四个不同的阶段组成：先启，精化，构建和产品化。

In a RUP project, the lifecycle consists of four distinct phases: Inception, Elaboration, Construction, and Transition.

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Rational Application Developer是IBM Rational软件交付平台(SDP)的一部分，包含了四个软件开发生命周期类别中的产品。

Rational Application Developer is part of the IBM Rational Software Delivery Platform (SDP), which contains products in four lifecycle categories.

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