preparation countdown 中文意思是什麼

preparation countdown 解釋
發射前準備倒數時間計算
  • preparation : n 1 準備,預備;〈常 pl 〉準備工作[措施];預修,預習 (for) 預習時間;(對…的)準備。2 (藥、菜...
  • countdown : n. 1. (火箭、核彈等準備發射、爆炸時的)時間計算(階段);(火箭、核彈發射、爆炸前)計時系統。2. (雷達的)回答脈沖比;(電視的)脈沖分頻[脫漏]。3. 讀數,示度;計數損失[漏失]。
  1. By combining with sports training practice, the authors carried out a kinematical analysis on the characteristics of the takeoff preparation techniques for fosbury style high jump in such 4 aspects as the athlete ' s run - up rhythm, takeoff leg support at the third countdown step, swinging leg support at the second countdown step, and takeoff support at the last step, and summarized the characteristics of different preparation techniques adopted by the athletes, such as step frequency type and stride type, as well as tilted support type and bended leg support type

    結合運動訓練實踐從運動員助跑節奏、倒三步起跳腿支撐、倒二步擺動腿支撐以及最後一步的起跳支撐4個方面對背越式跳高運動的起跳準備技術特點進行了運動學分析,總結出運動員採用步頻型和步幅型、傾斜支撐型和屈腿支撐型等不同準備技術的特點。
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