| 关于半圆式田径场弯道不分道跑竞赛项目弧形起跑线画法的研究--再论椭圆式画法 |
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| 引用本文： | 王全章,赵俊玲,余建华.关于半圆式田径场弯道不分道跑竞赛项目弧形起跑线画法的研究--再论椭圆式画法[J].北京体育大学学报,2003,26(4):552-553,559. |
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| 作者姓名： | 王全章 赵俊玲 余建华 |
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| 作者单位： | 宁夏大学体育系,宁夏,银川,750021 |
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| 摘 要： | 根据<田径竞赛规则>要求,从数学方面分析了不分道跑竞赛项目弯道弧形起跑线.目前,国内外所采用的几种画法"插针法","点连法"与<田径竞赛规则>不符合的情况,重新提出1981年西安体院<体育资料>第一期中的画法--椭圆式画法.
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| 关 键 词： | 圆的渐开线 正多边形渐开线 焦点 焦距 定长 椭圆式画法 弧形起跑线 |
| 文章编号： | 1007-3612(2003)04-0552-03 |
| 修稿时间： | 2002年2月15日 |
Re-discussion on Setting Out Curved Start on Bend of Track and Field Ground in Open Race |
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| Abstract: | According to the requirement of the Rules of Track and Field Athletics the setting out of the curved start on the bend of the track and field ground in open race was analyzed mathematically. At present, the setting out methods adopted at home and abroad, such as the "inserting needles" method and the "joining dots" method do not accord with the Rules of Track and Field Athletics. It is needed to put forward over again the ellipse shape of setting out, published in Volume 1 of the Sports Information issued by Xi'an Institute of Physical Education in 1982. |
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| Keywords: | circular involute regular polygon involute focus focal distance fix the length ellipse shape of setting out curved start |
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