短語詞組短語frequency difference fluctuation 頻率波動(dòng)frequency -fluctuation analysis 頻率漲落分析competitive frequency fluctuation structure 頻率競爭漲落frequency fluctuation competitive structure 頻率漲落競爭結(jié)搆Frequency fluctuation rate 頻率變化率;頻率波動(dòng)率low frequency fluctuation 低頻起伏;低頻震蕩random frequency fluctuation 頻率源隨機(jī)起伏the frequency fluctuation 臨震特殊頻率波動(dòng)measurement of frequency fluctuation 頻偏測量 返回 frequency fluctuation