The principle of vision limit comparison tester is described. The design process and tested results of the tester performance parameters are given.

叙述视觉极限对比测试仪的原理，介绍该仪器系统的设计过程，给出仪器性能参数的实际测试结果。

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It introduces team members to the underlying principles of test automation tools such as IBM Rational Functional Tester: modular test design, and tool-assisted data entry and data comparison.

它介绍给团队成员有关测试自动化工具的最基本原理，例如IBM Rational Functional Tester：组件化测试设计，和数据入口和数据比较辅助工具。

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