But powerline can also be susceptible to interference and the user may suffer a loss of performance when other devices are in use.
然而电力线也同样会受到干扰，尤其是在多个设备同时使用时，性能不稳定的情况也会给用户造成困扰。
2
The most major advantage of the method lies in the fact that only the interference wave with single frequency can be suppressed, and the loss of useful signal is very limited.
本方法的最大优点是仅对单频干扰波进行有效的压制，对有效波的损失很小。
3
A more exact method of measuring loss of half-wave in thin-film interference is introduced.