impedance matching 阻抗匹配
input impedance 输入阻抗
output impedance 输出阻抗
high impedance 高阻抗
low impedance 低阻抗
A: What does impedance mean in this circuit?
A：这个电路中的阻抗是什么意思？
B: It is the opposition to the flow of alternating current.
B：它是对交流电流流动的阻碍。
1) 电路中对交流电的阻碍作用
2) 电学中电阻、电感、电容的综合效应
3) 描述信号传输阻力的物理量
1. 阻抗；电抗（电学术语）
noun
1. The effective resistance of an electric circuit or component to alternating current, resulting from the combined effects of resistance, inductance, and capacitance.
Synonym: resistance (context-dependent), reactance