You can divide the detailed design, implementation and test phase into three iterations, each one aiming at implementing three of the nine subsystems.

你可以划分详细设计、实现和测试阶段到三个迭代中，每个迭代瞄准实现九个子系统中的三个。

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While test design and implementation is performed in this phase, we should bear in mind that it is not the test documentation but the test results that are important.

虽然这个阶段执行测试设计和实现，但是我们应该记住，重要的是测试结果而不是测试文档。

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This paper introduces the requirement phase, design phase, programming phase, test phase and maintenance phase of software engineering, and analyses some problems in them.

简要介绍了软件工程中的需求阶段、设计阶段、编程阶段、检验和测试阶段、维护阶段，并对其中的一些问题作了探讨。

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Some of China's supercomputers have been used to design wings for China's stealth fighter, now in test phase, and to design parts for China's first commercial jet.

WSJ: China's Not-So-Super Computer Program