effective impedance

例句：

1. 1. The new circuitdesign has significantly improved the overall performance ofthe device.
   新电路设计显著提高了设备的整体性能。
2. 2. In order to optimize the system's efficiency, we need to considerthe effective impedance of each component.
   为了优化系统的效率，我们需要考虑每个组件的有效阻抗。
3. 3. The engineer used a seriescombination of resistors and capacitors to achieve an effective impedancematching.
   工程师使用电阻和电容器的串联组合来实现有效的阻抗匹配。