| 挥击击球点距的测定 |
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| 引用本文： | 孙柏庆,姚康乐,陈学方,曹岳钟.挥击击球点距的测定[J].西安体育学院学报,1994(2). |
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| 作者姓名： | 孙柏庆 姚康乐 陈学方 曹岳钟 |
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| 作者单位： | 西安体育学院小球教研室 北京联合大学电子工程学院 北京科学院数学所 |
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| 摘 要： | 应用高速动态析仪对部分运动员的挥击点距进行测定．发现９个球点的击球点距在本垒前沿形成具有两个斜面的立体空间，９个击球点距，只有外低球点的击球点距小于３０ｃｍ．其它８个球点的击球点距大于３０ｃｍ．
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| 关 键 词： | 击球点距 甜点 |
The Determination of the Batting Pionts and Distances |
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| Sun Boqing et al.The Determination of the Batting Pionts and Distances[J].Journal of Xi'an Institute of Physical Education,1994(2). |
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| Authors: | Sun Boqing |
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| Institution: | Xi'an Institute of Physical Education |
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| Abstract: | n order to improve the wedding-batting ability of batters, it is neccessary to detemine the distances and points from the knocking centre to the nine points in the valid srea-the best one on the two-dimenssional coordinate with the beat-speed analysing apparatug after the study or the obliquely-knocking time-its approximate value is less than 4ms. The distances of the nine batting points in front of the home plat f form a solid space with two oblique plate. One of the nine batting-point distances is shorter than 30cm only if it is than of the outer-low batting point. The other distances are grater than 30cm. |
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| Keywords: | determination points and distances |
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