beat the air 中文意思是什麼

beat the air 解釋
白費力氣；勞而無功
  • beat : vt （beat; beaten 〈古語〉 beat）1 打，拍，敲，連打。2 打敗（敵人等）；勝過，超過。3 錘薄；錘平，...
  • the : 〈代表用法〉…那樣的東西，…那種東西。1 〈用單數普通名詞代表它的一類時（所謂代表的單數）〉 （a） 〈...
  • air : n 1 空氣，大氣。2 天空，空中。3 微風，和風。4 態度，樣子，風度，氣派；〈pl 〉高傲的架子。5 傳播，...
  1. Because the air - borne imaging system is required a far acting distance and the focal length of its optical system is long. influenced by the unsteady or moving platform mounted on plane, the change between the frames of image sequence is more. problems of image fuzziness and instability tend to be striking out, which becomes a bottleneck restricting the air - borne reconnaissance, collimation, evaluating beat effect

    機載光電成像系統，由於要求作用距離遠，故其光學系統焦距長，受其載體姿態變化和振動的影響，圖像序列幀間變化過大，造成觀察者覺得模糊、不穩定，己成為制約空中偵察、瞄準、打擊效果評估等功能的瓶頸。
  2. At hot end of beat pipe, several measures were taken to eliminate heat, namely ( 1 ) traditional sensible heat elimination ; ( 2 ) exhaust air is processed by air washer, then passes through hot end ; ( 3 ) exhaust air is handled by wet film, then passes through hot end ; ( 4 ) sprays water at the top of hot end, respectively

    第一級採用熱管式間接蒸發冷卻器，熱端布置4種散熱方式： （ 1 ）傳統類型的顯熱散熱； （ 2 ）排風經過噴水室降溫后進入熱端； （ 3 ）排風經過填料式直接蒸發冷卻器降溫后進入熱端； （ 4 ）直接在熱端頂部淋水。
  3. The huge bird seemed to hang in the air, borne by the wind currents, soaring with scarcely a beat of its huge, powerful wings

    大鳥好像被氣流托浮著懸停在空中，不怎麼扇動它那對巨大而有力的翅膀就能在空中翱翔。
  4. He raised his forefinger and beat the air oldly before his voice spoke

    他舉起食指，老謀深算地在空中擺了幾下才說下去。
  5. What he said merely beat the air as his argument was not convincing at all

    他所說的一點用也沒有，因為他的觀點不令人信服。
  6. Beat the air

    拳擊打空
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