短語詞組短語blade s frequency 葉片頻率blade passing frequency [機(jī)]葉片通過頻率;葉片通過頻率fundamental blade passage frequency 槳葉基頻blade vibration frequency 葉片振頻blade vibration frequency tuning 葉片調(diào)頻blade natural frequency 葉片自然頻率blade passing frequency noise 鏇轉(zhuǎn)噪聲blade natural frequency under rotation 葉片動頻blade resonant frequency measuring instruments 葉片共振頻率測試儀 返回 blade frequency