短語詞組短語frequency alias departure 頻率飄移frequency departure meter 頻率漂移計(jì)long term frequency departure 長期頻偏intrinsic frequency departure 固定頻率偏離long -term frequency departure 長期頻偏departure frequency [交]發(fā)車頻率;偏離頻率;離場頻率;也是必要的bubble departure frequency 氣泡脫離頻率departure e frequency 發(fā)車頻率 返回 frequency departure