短語詞組短語jittered pulse recurrence frequency [通信]跳動的脈沖重復頻率pulse e frequency modulation 脈沖頻率燈pulse repetition frequency 脈沖重復頻率pulse domain frequency 聲波主頻率streamer pulse average frequency 流注脈沖平均頻率pulse stepped frequency 脈間跳頻pulse stepped frequency radar 脈間頻率步進雷達laser pulse repetition frequency 激光脈沖重復頻率 返回 pulse frequency