effective wave impedance

例句：

1. 1. The design of the antenna must consider the effective wave impedance of the transmission line.
   天线的设计必须考虑传输线的有效率波阻抗。
2. 2.In order to achieve optimal performance, the material should have an effective wave impedance close to that of free space.
   为了实现最佳性能，材料应该具有接近自由空间的有效波阻抗。
3. 3. The engineers used a new method to calculate the effective wave impedance of the cable.
   工程师们使用了一种新方法来计算电缆的有效波阻抗。