change in the instantaneous impedance
change in the instantaneous impedance
瞬时阻抗的变化量
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The mechanism in forming reflection was studied; that is, the change in the instantaneous impedance caused signal reflection.
研究了反射形成的机理，即阻抗突变引发信号反射，通过分析给出了减少反射的措施。
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