single input change sequences 基本例句 单跳变序列 In this scheme, a TPG is designed by a low cost structural modification of an accumulator with an algorithm for single input change test sequence generation.该方案通过对累加器结构作低成本的设计改进，并通过一种高效的单跳变序列生成算法设计了时延故障测试序列生成器。