to-and-fro movement 中文意思是什麼

to-and-fro movement 解釋
來回擺動
  • to : adv 到某種狀態；〈特指〉到停止狀態；關閉。 ★也常和動詞結合，略去其後賓語，而構成成語： The door i...
  • and : n. 1. 附加條件。2. 〈常 pl. 〉附加細節。
  • fro : adv. 向那邊；向後。 to and fro 往復，來回，前前後後。fro2〈英方〉＝ from. n. 〈美俚〉非洲發型＝ Afro.
  • movement : n 1 運動；活動；進退 行動 動靜；動搖；動作；舉動；〈pl 〉姿勢；態度。2 移動 遷移。3 （市面的）活...
  1. They were ducking one another, running to and fro with many cries, and plashing in the mud, a fine picture of youthful movement.

    把對方按進水中，在泥漿里跑過來，跑過去，喊聲震耳，弄得水花四濺，構成一幅幅生氣勃勃的快樂畫面。
  2. The tidal current in the radial sandbanks area apparently has directional to - and - fro movement, which can be observed not only from tidal ellipses, but also from water particle traces. the calculated distribution of tidal velocity in this area shows that the average velocity is around 0. 6 to 1. 0 m / s

    平面潮流橢圓、水質點跡線、潮流流速特徵研究表明，輻射狀沙脊群海域潮流具有明顯的定嚮往復流形式，平均潮流流速一般為0 . 6 1 . 0m s ，滿足形成潮流沙脊的水動力條件。
  3. Through studing the plane and vertical hydromechanical characteristics in the radial sandbanks area, the mechanisms of the formation, maintenance and asymmetrical distribution of the radial sandbanks are understood. it ' s well known that the directional to - and - fro movement and strong tidal current are the necessary dynamic conditions for the formation of tidal current sandbanks

    通過對輻射沙脊群海域平面及立面動力特徵的研究，基本探明了南黃海輻射沙脊群形成發育和維持的水動力機制，以及其不對稱分佈格局與動力因素的內在聯系。
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