信号与系统――奥本海姆（中文版），主要是清晰版，很清晰，比超星打印的要清晰。书就不用给介绍了吧，大家都知道。...

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信号与系统――奥本海姆（中文版），主要是清晰版，很清晰，比超星打印的要清晰。书就不用给介绍了吧，大家都知道。-Signals and Systems- Oppenheim (Chinese version), the main version is clear, it is clear, than Chaoxing printing should be clear. Book would not have to introduce a bar, as we all know.