This paper describes state transition fault and collapsing of test generation basis of the character of fixed fault.

详细分析了固定故障所反映出的状态变换特征，提出状态变换故障模型以及相对应的测试生成压缩方法；

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Besides fault collapsing, this paper also proposes some techniques, such as code collapsing, change of the ending rules to optimizing the test generation algorithm.

结合故障精简，本文通过编码压缩、变化终止规则等方法进一步优化了全速电流测试方法的测试产生算法。

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