短語詞組短語flapping angle [航]翼動角;直升機型無人機揮舞角;揮舞角Flapping Crush 萬圣節(jié)鳥sound flapping 振羽音flapping flexibility 揮舞撓性Flapping Cage 避免尖峰flapping parameters 撲動參數(shù)flapping rule 閃音規(guī)則flapping down 下?lián)]舞flapping sheet 北半球磁場的振動層skin flap 皮瓣pocket flap 袋蓋valve flap 閥瓣flap gate 鉸鏈?zhǔn)介l門；舌瓣閘門；翻轉(zhuǎn)板flap valve 瓣閥；片狀閥flap wheel 翼片砂輪 返回 flapping