impedance variation

• 阻抗变化

impedance variation的用法和样例：

例句

1. Therefore, it is concluded that crack damage of steel beams can be identified by monitoring the variations of piezoelectric impedance measurements.
   由此可见，通过测量钢梁损伤前后压电陶瓷片的电阻抗变化能够识别梁中的裂纹损伤。