基本释义:

周期频率特性滤波器

网络释义

1)periodic filter,周期频率特性滤波器

2)Circle-frequency filter,圆周频率滤波器

3)periodicity,周期性;周期，频率，周波

4)reactive equalizer,固定频率特性滤波器;电抗均衡器

5)frequency filter,频率滤波器，滤频器

6)periodical filtering,周期滤波

用法和例句

After processed with periodical filtering method we find fixed leveling anomalies have different phases in development,which can be pided into early term,medium term and imminent term three stages,and it has distinct sign turni.

本文应用周期滤波方法对短水准资料进行了处理 ,发现短水准异常地震前有明显的阶段性 ,异常发展可分为初期、中期、临震三个阶段 ,且具有明显的由中期向短临转化标志。