斜碰撞时间的首次测定──棒球挥速理论纠正

First Determination of the Oblique Knocking Time──The Correction of the Batting Speed Theory

过去，我国对两个高速相向运动的球棒和球瞬间外碰撞粘滞时间的定量近似值没有进行科学研究．揭示这个粘滞时问的定量近似值，能给击球远而有力有所启示．首次在我国采用先进的美国ＫＯＤＡＫＥＫＴＡＰＲＯ１０００帧／ｓ高速录相分析系统进行５００帧／ｓ的水平和垂直同步拍摄击球全过程．解析得出粘滞时间４ｍｓ（毫秒）定量近似值．为提高中国挥击能力须对实验依据不足的挥速理论予以纠正．

n our country the quantitative approximate value of the sticking-detrained time at the moment between the bat and the ball oblique knocking against each other in the opposite directions has not been studied yet.The results of this study by the analysis of the videorecording, show that the quantitative approximate value of the sticking-detrained time is shorter than 4ms.