impedance ohm

例句：

1. 1. The electrical system needs to be checked for impedance.
   需要检查电气系统以检查阻抗。
2. 2. The resistance of the circuit is a measure of its impedance.
   电路的电阻是衡量其阻抗的一种方式。
3. 3. The impedance of the circuit can affect the performance of the device.
   电路的阻抗会影响设备的性能。